Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ba8e94ec7d39cb1…

MALICIOUS

PDF

48.5 KB Created: 2020-08-06 18:14:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a569082c1604425444327e2ff9dc621b SHA-1: 078bf865ce331ed9483451de61972ea13946f32f SHA-256: 8ba8e94ec7d39cb11781be72211abd1be81183b2e52e5ae174322e1051160245
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL, https://ttraff.com/pify?keyword=solving+equations+with+fractions+and+decimals+worksheet+pdf, is used to redirect users. The document body, though heavily obfuscated, contains references to this URL and numerous other benign-looking URLs hosted on shopify.com and other domains, forming a link farm. This indicates a likely attempt to lure users to malicious sites.

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.com/pify?keyword=solving+equations+with+fractions+and+decimals+worksheet+pdf In PDF document text
    • http://wifoki.chcslonline.org/uploads/1/3/2/8/132815028/nalegi_gavovov_jipipeladokuw_rojuba.pdfIn PDF document text
    • http://files.dursleymalechoir.org.uk/uploads/1/3/1/3/131384718/zademijijiz.pdfIn PDF document text
    • http://files.smart-homesolutionsllc.com/uploads/1/3/2/7/132712120/9570458.pdfIn PDF document text
    • http://files.inwed.org.uk/uploads/1/3/2/6/132695525/7b6407d8cf3.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/1/0431/7629/6614/files/suzuki_an_125hk_2013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1019/5605/files/11260817579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48054684450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1026/8064/files/6041871159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2018/0894/files/fefitajolubibukulema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6382/0959/files/48770632990.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22945880436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9714/4990/files/lezikewisemepibosowitekeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9684/9051/files/xanimopajojofukolubi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0809/7445/files/45842632985.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6760/4128/files/wumibudiwagomil.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 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000670b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x670B 5896 bytes
SHA-256: a4bffae5ffd1e556ae19b27152440d51ba4a597bd41d2c90e2b50d560247faa0
font_01_sfnt_off00007afd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AFD 13524 bytes
SHA-256: 2d84012305b917e0b2cb66433d5d39a828d8097cc540b0d1b73743a558fb7558
font_02_sfnt_off0000a68e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA68E 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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