Malicious PDF — malware analysis report

Static analysis result for SHA-256 1880c1327d2ef961…

MALICIOUS

PDF

45.1 KB Created: 2020-08-09 16:43:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dfcfd8ef08d59fcbf6d212bedb0c1f9a SHA-1: e3ebfdccc8b194bf892d0aa1fb51095c6b48dfa1 SHA-256: 1880c1327d2ef961951bd1a8138c0d86e0dc2624d8c1bad8c441fd534ad33145
194 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by an ML classifier and contains numerous links to external resources, many of which are hosted on potentially malicious redirector infrastructure. The document body, though heavily obfuscated, contains URLs that appear to be part of a link farm designed to attract search engine traffic for "free download" lures. The primary redirector URL is https://ttraff.cc/pify?keyword=molecular+genetics+books+free+download+pdf, which is also identified as a malicious redirector.

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=molecular+genetics+books+free+download+pdf In PDF document text
    • http://files.karlperformancecustomshop.com/uploads/1/3/1/8/131856333/wuselogidex-rebisu.pdfIn PDF document text
    • http://files.dgwengineering.com/uploads/1/3/1/3/131382721/1862990.pdfIn PDF document text
    • http://badafox.erikaclaireart.com/uploads/1/3/1/6/131607600/4191504.pdfIn PDF document text
    • http://files.bruinsconcretecanoe.org/uploads/1/3/1/4/131482968/d3d97506e5.pdfIn PDF document text
    • http://files.gardeniacafeonline.com/uploads/1/3/1/0/131070611/wudatidugana.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/1/0435/9330/2178/files/57816352301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8424/3351/files/29239778090.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4744/4899/files/89594880171.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5117/9416/files/xusigeseg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7013/6218/files/24297434331.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6958/8124/files/muzepogaduziludotunisas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1816/5146/files/6979205762.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0232/1307/files/intermediate_market_leader_3rd_edition_business_english_course_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/pow_function_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8697/8984/files/21846370518.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8935/3117/files/42155059905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3152/7575/files/jevodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9015/7473/files/british_admiralty_chart_symbols.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_off000063c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C3 5504 bytes
SHA-256: 189b3578f6fc57abadb165f04f87c138487d4c498529e8e0b2b223b8c005db04
font_01_sfnt_off000076a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76A0 10016 bytes
SHA-256: cf0b29661ff716bd12da38f9555926c3e73278853f95ddc9e288189303d53675
font_02_sfnt_off000098d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98D1 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34