Malicious PDF — malware analysis report

Static analysis result for SHA-256 c43972c9fe73310f…

MALICIOUS

PDF

49.7 KB Created: 2020-08-25 14:53:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5512b23d7d99de62382ca6862c8818c9 SHA-1: 66978d3b694107581164493705773d62f08695c8 SHA-256: c43972c9fe73310f36dbdf3914b44258f77a70458558953a37c84bced510103a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to external PDFs, suggesting a link farm or SEO poisoning attempt. One critical heuristic identified a link to a known malicious redirector, 'https://ttraff.cc/pify?keyword=anti-+discrimination+law+philippines+pdf', which is the primary indicator of malicious intent. The document body, though heavily obfuscated, contains this same URL, reinforcing its role in the attack. No scripts were extracted from this sample.

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=anti-+discrimination+law+philippines+pdf In PDF document text
    • http://files.angelicaatelier.com/uploads/1/3/1/6/131606487/xiloxozidedewex.pdfIn PDF document text
    • http://files.kingscartelgear.com/uploads/1/3/0/8/130874175/favemuluwojevigamab.pdfIn PDF document text
    • http://vupeke.seattlepregnancymassage.com/uploads/1/3/0/7/130776485/377411.pdfIn PDF document text
    • http://lebanif.artpetch.com/uploads/1/3/0/8/130814238/sinuwej_rumusemudegil_xetefezowafas.pdfIn PDF document text
    • http://files.4hsummercamp.com/uploads/1/3/1/3/131398022/fafudazok.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/1/0432/4104/6171/files/85445693677.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4352/8609/files/pumepum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9832/3609/files/vurukajezofowojopadadon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8738/9087/files/tegusiragaledunajebori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7220/0608/files/53909820991.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1257/0787/files/vitewofosufunekonepovoki.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5110/3894/files/lipejarutomojarebubidime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/45484104345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3331/1904/files/69459761434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/25950481517.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 5

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_off00007294.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7294 5508 bytes
SHA-256: 332718641099c206984321377492bb9effa8fd3ae9e55c984cf188dc9c5d06e5
font_01_sfnt_off00008532.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8532 4360 bytes
SHA-256: 2901076357b551b101646959ab0d56630338961500d929a8e39e918fa0c9196a
font_02_sfnt_off00009598.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9598 10740 bytes
SHA-256: 13773d45d81fcbdca9cae3b34eb50c23c38e7cc029edbe530cf0c6baacaaca91

Open this report in the interactive analyzer, or submit your own file for analysis.