Malicious PDF — malware analysis report

Static analysis result for SHA-256 78c556e3757a52cc…

MALICIOUS

PDF

38.5 KB Created: 2020-08-27 22:01:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7d635f53f238b6e8578cedb1f8ffdf08 SHA-1: ea4ddb56667f0c7ecf93056d63f7fd337e34628d SHA-256: 78c556e3757a52ccee5cd2290d2e0617a7aa75eb805e86ab8b402f6e8b5cd1b8
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which are hosted on Shopify and appear to be part of a link farm designed to mimic search results. The primary redirector URL, 'https://ttraff.ru/pify?keyword=alex+rider+eagle+strike+pdf+free+dow', is identified as malicious and suggests a phishing or scam attempt. The document body, though heavily obfuscated, contains this same malicious URL and other Shopify links, reinforcing the lure for users to download further content.

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=alex+rider+eagle+strike+pdf+free+dow In PDF document text
    • http://files.aymestreyschool.com/uploads/1/3/2/3/132302870/jimoxezoraj.pdfIn PDF document text
    • http://rofosopap.charliwhat.com/uploads/1/3/0/9/130969300/pezonogitexuxep-repuf-modifuzu-majimijid.pdfIn PDF document text
    • http://binadaxev.storiestoldbyholly.com/uploads/1/3/1/8/131856158/sujopujidowem.pdfIn PDF document text
    • http://files.sandyhuntsberger.com/uploads/1/3/0/9/130969499/jezumujeziliriniza.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/1/0434/8621/6344/files/kitekinefugimorikir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6861/1998/files/30749445861.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5199/8623/files/lotox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/11100610933.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8852/7013/files/61684846810.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3179/7668/files/83771716180.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8277/6727/files/87881309639.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8523/4338/files/fuzekusojunusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2284/4067/files/kavaxamukus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0876/0735/files/1080p_sample_video_mkv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0295/1842/files/zarirusaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6296/8991/files/jubobibam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/wais_iv_administration_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8856/6677/files/75623715144.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_off00005839.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5839 5420 bytes
SHA-256: cb5582654ccadf221b319e25fdcac7e2a3f3285cd541c1455c9b3e10431e3ffc
font_01_sfnt_off00006ad2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD2 10080 bytes
SHA-256: b32ed7104ddc5fd6d8d942d67eb8670cd0e9018b4ba49e237cbfafe3be603c90