Malicious PDF — malware analysis report

Static analysis result for SHA-256 18812cae17c323ce…

MALICIOUS

PDF

66.1 KB Created: 2020-08-06 10:42:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d1fa3b42d06a8793a91c85f23373517d SHA-1: 128062eb7bb1d493ec8e1b37e800cd954605de0a SHA-256: 18812cae17c323cedbaa504133d5308fefa5afde68f0222dc02e4f40277f6cb5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) that is flagged as malicious. The document body and heuristics suggest a lure for free downloads, likely leading to phishing or malware. The presence of a link farm and a redirector indicates an attempt 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.cc/pify?keyword=analytical+chemistry+techniques+pdf In PDF document text
    • http://files.irvingtonfbla.org/uploads/1/3/0/7/130738569/zigopubu.pdfIn PDF document text
    • http://files.megabiteschocolate.com/uploads/1/3/0/8/130813778/167019.pdfIn PDF document text
    • http://files.bandofcovers.net/uploads/1/3/1/1/131164574/7019428.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4842/6920/files/male_bodybuilding_workout_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6356/5727/files/xalipotisutoxukebulodofij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7854/1727/files/year_calendar_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4638/8380/files/19455163592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/28664871254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5467/7662/files/zejimexarigolemilumagolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4354/4488/files/132_livros_apocrifos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3173/3159/files/72328371153.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6239/4021/files/60830475405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9689/9733/files/52068317376.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7516/5594/files/jozuwuwevem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4346/9974/files/jojufalumuxizuju.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_off0000b372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB372 5384 bytes
SHA-256: a0ac83e8725b260eef7d8af9cd09d0c025aaac34c760f749d0c0176f3f5cddd3
font_01_sfnt_off0000c587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC587 11660 bytes
SHA-256: 6e5026ff3824ee87b48a7fca1d4869719d08a2318e995ccea2444ca3c5f3b5d8
font_02_sfnt_off0000ecfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECFD 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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