Malicious PDF — malware analysis report

Static analysis result for SHA-256 65d326c9d2c2d4b8…

MALICIOUS

PDF

58.9 KB Created: 2020-08-04 01:27:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ccd81061cf145f37eeae3f886dcd0bfa SHA-1: 5725073e3e4b2fd37af06ca5733b9c7c96b539d4 SHA-256: 65d326c9d2c2d4b897b9094b8975446258181beffa60e08ad0f86ad27cb038b2
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service known to host malicious content. The primary redirector URL is 'https://ttraff.ru/pify?keyword=life+cycle+of+ascaris+lumbricoides+pdf', which is also flagged by heuristics as a malicious redirector. The document body appears to be malformed or obfuscated, but the presence of these links strongly suggests a phishing or malware distribution attempt.

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=life+cycle+of+ascaris+lumbricoides+pdf In PDF document text
    • http://files.blessedaretheythatmourn.com/uploads/1/3/1/3/131379183/e57130c0a.pdfIn PDF document text
    • http://files.pensacolacraftbeer.com/uploads/1/3/0/7/130775675/8518186.pdfIn PDF document text
    • http://files.cuddlykoalaspreschool.org/uploads/1/3/0/7/130739517/1737f3bafab46.pdfIn PDF document text
    • http://files.abbottspatchcollection.com/uploads/1/3/2/3/132303312/187834.pdfIn PDF document text
    • http://files.jackandwinn.com/uploads/1/3/0/7/130738996/wemilerovapomiwukej.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/1/0435/3651/5221/files/lozabomox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7281/4245/files/15602559479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3190/3902/files/89452550406.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7237/3414/files/lezodezolenuvudoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8038/3653/files/81626753434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9442/4232/files/jafuzoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8052/3681/files/zegidizoneturewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7772/9432/files/10104683224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2249/1541/files/vanilla_js_document_ready.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5592/2852/files/moxovoviguvemijamupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5004/9446/files/pathfinder_advanced_race_guide_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7287/9782/files/11256169992.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3159/2102/files/one_hundred_and_thirteenth_rule_of_acquisition.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a9bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA9BC 5484 bytes
SHA-256: 02834464b07ce3acf3be93c1fd81a8ba1ded218e86196e37b819b7b2c11e2d82
font_01_sfnt_off0000bc57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC57 9980 bytes
SHA-256: 5873063a6c5b9a70cff26a5ac4b9364b770d591d55bc11dcaa04e0834fc2a23f