Malicious PDF — malware analysis report

Static analysis result for SHA-256 78729593ffea57e8…

MALICIOUS

PDF

43.2 KB Created: 2020-07-25 01:45:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d1128a1eed97975cb0cde5981928c865 SHA-1: 7adcab60c93058c5cfd25f5a05d83244e21245fd SHA-256: 78729593ffea57e8fed91c34ceaff474e21c12ed1a30659ea3b33c5872318c40
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, specifically pointing to 'ttraff.com'. The embedded document body, though heavily obfuscated, contains text related to 'Realsoft attendance software', suggesting a lure for a fake download. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to redirect users to malicious infrastructure.

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=realsoft+attendance+software+10.+7 In PDF document text
    • http://files.fchseagleband.com/uploads/1/3/0/7/130739073/3dd50.pdfIn PDF document text
    • http://files.thelogcottage.co.nz/uploads/1/3/1/0/131071063/tutaniwanijoru.pdfIn PDF document text
    • http://files.packupallyourdishes.com/uploads/1/3/1/6/131606284/filisekawiso_bilifaxa_puged_gibeliroturu.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/1/0432/0470/6464/files/sanofatinivutukal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4000/6559/files/jomumopamitom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0497/7564/files/wusubodibijubodukirufed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5444/8286/files/wusixapegapajowedopejave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/temedugoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9341/7367/files/89545222005.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8027/8426/files/rumuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5962/5627/files/48229145987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5815/1070/files/fedazajefun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mirizopenifipometetotagoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9898/8954/files/83834695420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9372/8158/files/59071794754.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5813/3152/files/51646850770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1754/3588/files/kirokabomi.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 2

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_off00006af1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF1 5160 bytes
SHA-256: 5fbec45af2d3721eec7f5710d1c732932dbfbb02607825335f47d7a8531db493
font_01_sfnt_off00007ca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CA8 10308 bytes
SHA-256: f2d418f0df96b4d6839241988efc21911020587a4a194ba92218b61c1c9ef7f9

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