Malicious PDF — malware analysis report

Static analysis result for SHA-256 a79d7a22ad9c88af…

MALICIOUS

PDF

52.6 KB Created: 2020-08-27 12:45:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b38a09f847a5758c33f88144aab4d03c SHA-1: 0d5d8a1515d4d7a1954851bd97341e039d631516 SHA-256: a79d7a22ad9c88af8724a3ff8ae42e7f535565fe3c8189e07982ea4b6c6660df
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.cc/pify?keyword=basic+mathematics+formula+for+compet, which is likely used to redirect users to further malicious content. The document body, though heavily obfuscated, contains this URL and other links, suggesting a lure to a malicious site disguised as a formula sheet.

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=basic+mathematics+formula+for+compet In PDF document text
    • http://kobewot.herricksupportstaff.com/uploads/1/3/0/7/130776783/givenosiledore.pdfIn PDF document text
    • http://files.franticband.com/uploads/1/3/1/4/131437977/jetiresunef.pdfIn PDF document text
    • http://files.mssimonsays.org/uploads/1/3/1/3/131383380/neguxizufetek-xazaxakurogiri-nikotesari.pdfIn PDF document text
    • http://files.artisticcounterculture.com/uploads/1/3/0/7/130740316/00a893798942c26.pdfIn PDF document text
    • http://files.callingallcreative.com/uploads/1/3/1/8/131857565/14fefb07f9.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/1/0462/1588/9050/files/73450178768.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8300/5078/files/78596677842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6660/5211/files/whatsapp_status_video_hd_mp4_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3635/9326/files/anesthesia_drug_doses.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67572949107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9674/4871/files/47322968150.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6349/1222/files/visew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3502/3765/files/ashwamedha_kannada_movie_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8987/0491/files/92953322474.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

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_off00006f22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F22 5304 bytes
SHA-256: b981e6a66ec5c2a5232574dcec324441520e6f2d45a1381f3dfc7c7fdfb6bab2
font_01_sfnt_off00008108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8108 14760 bytes
SHA-256: bdde46c0dae6392f42c7e4d1c71781308ff9c898063d4a63b8cc99c06be4ce10
font_02_sfnt_off0000af24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF24 16064 bytes
SHA-256: 0da5b551d84a453f500a6ba8ca1adfd4400b36dae0f103b74fb712e1a4f46a36

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