Malicious PDF — malware analysis report

Static analysis result for SHA-256 52894d24c356e78a…

MALICIOUS

PDF

38.5 KB Created: 2020-10-29 11:34:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 6e7075535db223f66335fc93d21f7476 SHA-1: 8740039688ca644a8e9c3f2eada7695f1554b99f SHA-256: 52894d24c356e78a7cc7b43c9f5e9a4a01b75b5f18a7a2b02871f995c93ceeeb
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains a URL that is also flagged as a malicious redirector. This suggests the file is part of a phishing campaign designed to lead users to malicious sites, likely for credential harvesting or malware distribution.

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=lowering+the+bar In PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/2be4e355eb630.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0429/7375/files/21854198940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2973/9704/files/lords_mobile_apk_mod_1.96.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9177/8454/files/vauxhall_tigra_owners_manual_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1264/4251/files/xofujewasigas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9075/8817/files/resumo_de_equilibrio_quimico.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/xinijogej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63b53525-0a89-442a-8059-411b6950e157/dukejilise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/1052/0774/files/dulofoxeba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4797/1735/files/treasure_hunt_answer_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/4368/5030/files/city_of_omaha_trash_complaints.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/rozirex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/6486/7992/files/52253283929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/6044/3291/files/bufosewozujipulemav.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/baxaxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/2480/8612/files/free_download_beats_audio_for_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1792819-c326-4d74-a8bf-23379c0cb2b4/88770098617.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42332495-c707-437a-b4ea-5cb0e9d2e065/vixomebapixuwepu.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005867.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5867 4912 bytes
SHA-256: 9d62cb193e17e693da13866597790fc69a4312b0cfdd80659f74bd08283f562e
font_01_sfnt_off00006931.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6931 10472 bytes
SHA-256: 9c38458b9bf0eb7f882380cba27934a9fba00b2eb9190753876e21e0337080b0

Open this report in the interactive analyzer, or submit your own file for analysis.