Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5fee8817df82ad0…

MALICIOUS

PDF

52.8 KB Created: 2020-08-10 13:11:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7f8b0e0b6ef03a4fd83a98023c9d4155 SHA-1: bb8123eae2153edebeeccecb333b200375f585a9 SHA-256: a5fee8817df82ad096ace74e71cf6a09b6eacc79e69c8faea995b3a1aeeef23c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded external links, with one identified as a malicious redirector. The document body is heavily obfuscated and appears to be generated content, likely intended to mask the malicious links. The primary attack pattern involves luring users to click on these links, which could lead to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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.cc/pify?keyword=biebl+ave+maria+ssaa+pdf In PDF document text
    • http://files.rollinsmovingservices.com/uploads/1/3/1/3/131384070/mafavipilironugoguge.pdfIn PDF document text
    • http://files.inclusive-arts.com/uploads/1/3/0/7/130775974/7c671a6190cc1c0.pdfIn PDF document text
    • http://files.rogersalter.com/uploads/1/3/2/6/132682745/xokedokuvofawiz.pdfIn PDF document text
    • http://files.drivingaids.com/uploads/1/3/1/3/131383916/dulijumezala-videmok.pdfIn PDF document text
    • http://xulod.wermssa.com/uploads/1/3/0/8/130874493/fafakedigufiwok-dajef-ramaxew.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/1/0428/0716/5095/files/20231337467.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2585/6662/files/lautramont_gaston_bachelard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5340/8675/files/9935271861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44240048578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9846/2624/files/vibubonaludegif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1430/6466/files/46361030928.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8947/7273/files/87915536778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/54765088350.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0298/6659/files/ruteminazos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8847/8359/files/96923651696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4681/3346/files/sensory_evaluation_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8275/2935/files/nuregotoxulijubulojusutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0311/7721/files/31201208782.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000798b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x798B 4928 bytes
SHA-256: 26934dd29db0eee0b0d3b09ab2c01f5210b5da68a5c65bc0fe7c281d04f7e376
font_01_sfnt_off00008a42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A42 13892 bytes
SHA-256: afdf541b1de10478259ff8d1d681fdfe1e86bf278c20febeab7ab46576cb8620
font_02_sfnt_off0000b5c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB5C0 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176