Malicious PDF — malware analysis report

Static analysis result for SHA-256 890bf684303ac562…

MALICIOUS

PDF

57.8 KB Created: 2020-08-18 20:12:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4d88d17a583db7368bea040565ab3960 SHA-1: 778c05a80c6b3da8f4959c281b75432139c03dba SHA-256: 890bf684303ac5628325ced5d7fbadc8b6ebada155ce54e7093f360341fff6a9
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous embedded links, many of which point to redirectors and SEO link farms, indicating a phishing or malicious content distribution attempt. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' strongly suggest this intent. The document body, though partially corrupted, contains a URL that matches one of the identified redirectors, reinforcing the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=dance+video+song++sharechat In PDF document text
    • http://files.helbreathng.online/uploads/1/3/1/3/131397927/4b8872652b4.pdfIn PDF document text
    • http://lowolovi.deficientautobiographicalmemory.com/uploads/1/3/2/6/132681513/fidotadisotuj_zuluzib.pdfIn PDF document text
    • http://nuwela.tutorworlduk.com/uploads/1/3/2/6/132695306/pevakafi.pdfIn PDF document text
    • http://files.drakosden.com/uploads/1/3/0/7/130739169/dodefur.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1503/5290/files/where_to_find_skyrim._ini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3421/2509/files/62316845617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5206/3125/files/57163610591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3532/0742/files/zokapimeziwalid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4590/3781/files/davomuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/godatoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/stardew_foraging_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9224/5656/files/game_lodge_business_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/3988/7255/files/banting_green_and_orange_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2060/6885/files/81414751929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0668/0484/files/probability_math_definition.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004603.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4603 2972 bytes
SHA-256: fa67c9f03e5ed3a33d8feaa5b7f0a86fdb597968dca46e2bf4dd2f8764e1d93f
font_01_sfnt_off00005080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5080 5016 bytes
SHA-256: 18e98ea71c6f6dafb949a443e4572a29173926464c466dd4aa760d4cdadc9e0b
font_02_sfnt_off00006180.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6180 13844 bytes
SHA-256: 0207a002b002d0571d4bdadcc8e33e3292b420bddcb7899aea7cb0c2bfcdebb7
font_03_sfnt_off00008c1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C1E 9508 bytes
SHA-256: e24d48701eef94c51cbaeb9b68723a504f290faf095a6e5b40fc4bfe589482ce
font_04_sfnt_off0000acae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xACAE 18860 bytes
SHA-256: cb9eac1a494a6dcde7905d2b15d4f385a1798f7de456e05215c5635aa6f21093
font_05_sfnt_off0000c8f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8F9 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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