Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef503b84d237721e…

MALICIOUS

PDF

49.1 KB Created: 2020-08-12 09:52:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ac1170759605aa0fe44b9a12f71cee83 SHA-1: 862a7deb79907685f20c0af05fd47b7f328a38a6 SHA-256: ef503b84d237721e9bdf6e1a4298d1aa64e4e94f1a110fbb912e74eef939a14a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Arizona state university map pdf' and the malicious URL 'https://ttraff.ru/pify?keyword=arizona+state+university+map+pdf'. This suggests a lure to a malicious site, likely for phishing or to download further malicious content. No scripts were extracted from this sample.

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.ru/pify?keyword=arizona+state+university+map+pdf In PDF document text
    • http://duzewajin.snaithrawcliffemedicalgroup.com/uploads/1/3/1/4/131407406/2f1afbdee3441.pdfIn PDF document text
    • http://files.bcdpartistry.com/uploads/1/3/1/4/131407226/508eb783fdab.pdfIn PDF document text
    • http://files.agentsreferralnetwork.com/uploads/1/3/1/3/131398131/latalivadov_xubexowubit.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/1/0435/5942/0063/files/corporation_bank_account_closure_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0378/1013/files/96340775141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4072/6427/files/2903314373.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1078/3394/files/sherlock_holmes_soundtrack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5473/5264/files/23060121802.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7569/7830/files/academic_writing_skills_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4295/4661/files/52815091855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7026/7300/files/burulusul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8096/5534/files/komafibeworutorusoxuwijo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0081/5006/files/kappa_alpha_psi_ritual_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7209/4362/files/84290572677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8017/9107/files/bubipasanebubadezep.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_off0000690d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x690D 6996 bytes
SHA-256: 874901e2cf8bd134072749e0b5e13fe6b2a49503253248ceb4a8036cb6aed39d
font_01_sfnt_off000080d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80D9 5356 bytes
SHA-256: d60acfc9728dcaf723d45a04812ee86cf466494136f3614d12d412fdd08709fe
font_02_sfnt_off0000930c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x930C 10412 bytes
SHA-256: 281b8862352e9acc910005732b93d755787a75bdafd213832df5d8029efc669a

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