Malicious PDF — malware analysis report

Static analysis result for SHA-256 e20f89d92f8d611a…

MALICIOUS

PDF

36.9 KB Created: 2020-08-11 02:08:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3d893ef9cfc502d73562ba66f61eb6cf SHA-1: efd316b52f43a1a720344db41b06f05211094236 SHA-256: e20f89d92f8d611a2d236f93e9207b90848dad4d6049166c782dcb1dc39ebd2b
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector, indicating a social engineering lure.

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=myanmar+proverbs+in+english+pdf In PDF document text
    • http://pewuwera.cisledhockey.com/uploads/1/3/1/4/131407406/wawuruwuwat.pdfIn PDF document text
    • http://files.lataca.co.uk/uploads/1/3/1/0/131069934/9190269.pdfIn PDF document text
    • http://files.dianabradfordart.com/uploads/1/3/0/7/130775934/1304724.pdfIn PDF document text
    • http://files.iwasasleddog.com/uploads/1/3/1/8/131871690/rifug.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/1/0431/1734/6976/files/fesimopokegezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4971/2806/files/fuxifepinagitoseva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7610/8956/files/xojaguvobesebusugidas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0006/2367/files/fimulatisexizogivuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4431/4024/files/sutunexomebiradipise.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/fupewudu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/7041/7046/files/amazon_fire_7_tablet_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2136/8482/files/3d_reader_for_windows_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3604/7522/files/asexual_propagation_methods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9194/1781/files/carcinomatosis_peritoneal_ascites.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

Related samples 7

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000535d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x535D 5760 bytes
SHA-256: b89c95832f87e4c1041d332ecdd4189b497a005058405c15d839a956a881137e
font_01_sfnt_off000066d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66D0 9396 bytes
SHA-256: 911a9286ae597969d4b3f7be6b59c0675af908172aa443c339fd80aa38dbfca5

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