Malicious PDF — malware analysis report

Static analysis result for SHA-256 6161f1a86c34eec6…

MALICIOUS

PDF

54.2 KB Created: 2020-08-11 14:31:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 153daad080be0377c0085bf61985092e SHA-1: a6743575a1d54b199bf575929f6dbc6f9ba6d65c SHA-256: 6161f1a86c34eec67eeb38f890cf079d16eb95b41f82f9858d5dd1e9152a57fd
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of an SEO link farm designed to lure users with search terms like 'supervisor behavioral interview questions and answers pdf'. The primary redirector URL, https://ttraff.cc/pify?keyword=supervisor+behavioral+interview+questions+and+answers+pdf, is flagged as malicious. This indicates a phishing or scam attempt disguised as a document download.

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=supervisor+behavioral+interview+questions+and+answers+pdf In PDF document text
    • http://zejowa.hello2kitty.com/uploads/1/3/1/1/131164250/dorumafularudo.pdfIn PDF document text
    • http://files.kansascityamprepair.com/uploads/1/3/0/9/130969146/7d7fa7.pdfIn PDF document text
    • http://files.affordablehomecleaningservice.com/uploads/1/3/1/6/131606291/b4e27333.pdfIn PDF document text
    • http://files.do.mrazamerine.com/uploads/1/3/1/3/131382078/1890996.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/1/0428/7247/1718/files/juvufejurik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8996/1884/files/zokufobunisuxowewev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/1613/7376/files/82448817593.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bizem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3158/5180/files/57948861718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0177/3212/files/28569401645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3564/8409/files/gobomifopate.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2919/8998/files/gmat_official_guide_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0838/5439/files/33688039191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7469/8912/files/ruputinozotevoweneg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1974/7999/files/43217466035.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67B0 5532 bytes
SHA-256: 165c7741080294203ae2fc7756161c90e1a493f9199a2c3d6462fdf95902da4a
font_01_sfnt_off00007a71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A71 1924 bytes
SHA-256: c72c034d3ceb966cd3a9d0267f768790c8e06328c5948964c2b57cdd8bc69b4e
font_02_sfnt_off000083a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83A9 10108 bytes
SHA-256: a3d85e9a1792cbe60de9c2caf119d0e720c2764c6c35d0a0f6aaa16991f0adce
font_03_sfnt_off0000a635.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA635 16436 bytes
SHA-256: a8b0c25172aa9b5bc08eee067abf1650770238587142d73506cc124324baa444
font_04_sfnt_off0000bc3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC3C 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34