Malicious PDF — malware analysis report

Static analysis result for SHA-256 53ee3968493e2aef…

MALICIOUS

PDF

47.9 KB Created: 2020-08-20 14:27:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ba868536cc2c7bb0b1a61a7be633543f SHA-1: f09f16d382a2f6eeb0326a57792eb8c2c48ca1e2 SHA-256: 53ee3968493e2aef98e146794a8f7f2de4f42ff3e14aac22d23e54a175281b56
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, flagged as a 'PDF_SEO_LINK_FARM'. One of these links, 'https://ttraff.cc/pify?keyword=colliers+singapore+market+report', is identified as a malicious redirector. The presence of a link farm and a malicious redirector suggests an attempt to manipulate search results or lead users to malicious content, likely as part of a phishing or SEO poisoning campaign.

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=colliers+singapore+market+report In PDF document text
    • http://xobef.writtenfromwithin.com/uploads/1/3/2/6/132695550/1e23661300e4.pdfIn PDF document text
    • http://files.centerforpilates.com/uploads/1/3/0/8/130814575/b49fe.pdfIn PDF document text
    • http://nizelaxem.garden-artworks.com/uploads/1/3/0/8/130874368/92b233b296e519.pdfIn PDF document text
    • http://files.bluelabelproducts.net/uploads/1/3/0/8/130813736/bc310713.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/1/0432/0791/7729/files/61729891407.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7411/7015/files/fdmr_name_ringtone_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/givumikekotezazexovuzala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2400/5794/files/32352637223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/dinoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2480/0154/files/bajaj_allianz_general_insurance_claim_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1467/4841/files/27249566196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3486/9921/files/aprender_frances_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8922/2045/files/namuvimipif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6693/1862/files/the_marriage_plot_jeffrey_eugenides.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

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_off00006cbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CBF 4920 bytes
SHA-256: 14081cc0ad8cbeaf1c06882ac2b05da079d73a0f566a77874b10e4d64d9ad0a5
font_01_sfnt_off00007dca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DCA 5108 bytes
SHA-256: d9bfabc7d651fc084f30820fea101cf58b1bf5d9e1daa6383fc4b57147b7deae
font_02_sfnt_off00008f15.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F15 10380 bytes
SHA-256: 9ba519d420c0136250d0934d1feba9454b33aeb8aabfc14773719c3753eba186

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