Malicious PDF — malware analysis report

Static analysis result for SHA-256 89a8a5cd041186b7…

MALICIOUS

PDF

88.8 KB Created: 2020-08-10 03:23:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a1f38b85801d97700c337ea0d426895f SHA-1: 7951e3759b949aa888b0d50554a2b614d9b357ec SHA-256: 89a8a5cd041186b799df5adc46c1cc691ab074741f3ae6cef29d131abc451050
194 Risk Score

Malware Insights

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

The PDF contains numerous links, identified as a link farm and redirector, pointing to `https://ttraff.ru/pify?keyword=benjamin+graham+intelligent+investor+free+pdf`. This URL is flagged as malicious and associated with SEO redirectors, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains the same URL, reinforcing its role as a lure.

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=benjamin+graham+intelligent+investor+free+pdf In PDF document text
    • http://files.stmarklutheranroseville.org/uploads/1/3/1/6/131606668/netiluxesitez-lowulixufepunu-lopekiwit-dibupagu.pdfIn PDF document text
    • http://files.fortunatierra.com/uploads/1/3/0/7/130776673/6966068.pdfIn PDF document text
    • http://files.westtechmobile.ca/uploads/1/3/1/6/131637562/rapigew.pdfIn PDF document text
    • http://lufow.kidacademy.org/uploads/1/3/2/8/132814930/9108716.pdfIn PDF document text
    • http://dorutuves.drlindseynd.com/uploads/1/3/1/3/131398140/0589d0a4d.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/1/0435/2756/9576/files/61664143787.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6805/4940/files/42753189816.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/92030461359.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/29625659701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7061/1861/files/92920182245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7977/0019/files/goposurizuxisotolidamuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/noxotegunapawubigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9376/0931/files/hp_w2207h_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0711/3373/files/revista_eudora_ciclo_6.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7849/2072/files/mujuboremonusatoniko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1737/1797/files/nidaw.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010677.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10677 5640 bytes
SHA-256: 2e6f14cea7e6dab31a234c2ab9336eb986daafc05a51a97dd03b5d7cbb9f4182
font_01_sfnt_off0001198e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1198E 11168 bytes
SHA-256: 81b452a241e31684d43619e92ab0d24ccd11aa0a1cbd058e564467c63c9bfa86
font_02_sfnt_off00013fea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FEA 16184 bytes
SHA-256: dcc4c0abc0890442b0fa2aa32d0d4460407ba6a80c6f9f092138d4912a9fa5ed