Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ece84d62d8f3059…

MALICIOUS

PDF

36.4 KB Created: 2020-08-20 10:05:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b7a4772bb5a86e4293b57c492b287f56 SHA-1: 105694c1441d242fbfe66111f65039f861927f4f SHA-256: 3ece84d62d8f3059d209aaca26f10ab2e7271a99704166be8185973888c67fa8
194 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a software download. The document body, though heavily corrupted, contains the URL 'https://ttraff.ru/pify?keyword=sql+server+2014+free++filehippo' which is flagged as a known malicious redirector. The presence of a large number of external PDF links, many pointing to Shopify domains, suggests a link farm used for SEO poisoning to drive traffic to malicious sites.

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=sql+server+2014+free++filehippo In PDF document text
    • http://files.nottinghammassage.com/uploads/1/3/1/3/131384306/3073693.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/1/0427/7485/5846/files/98587052423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6887/5157/files/511586858.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7504/1435/files/despicable_me_3_trailer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/50790457502.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2734/9159/files/shoemaker_levy_9_reading_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9007/6057/files/25300479431.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2885/7503/files/74478475276.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9236/1887/files/save_gif_from_twitter.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2425/2055/files/2059908227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8344/0036/files/23286528600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0381/2773/files/bujofisalujas.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
🗂 Part of campaign: hollyberrycatering.com 3 samples

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F6E 5484 bytes
SHA-256: a589a7d6c054688d27e37d8157e3612c97fafc8dac71089cf0b764832e4f2538
font_01_sfnt_off00006224.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6224 10296 bytes
SHA-256: 827173ec1df02f1222d8f2b3a0ed4d09934c1883e181c2037eb8b5e0e987c6e3

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