Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbcf067b0a4ce2b5…

MALICIOUS

PDF

53.7 KB Created: 2020-08-07 01:57:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 241b19107affd4188852fa9b35f9f63e SHA-1: c55d834ec0ac1822319afc54d4cd28218cbbc053 SHA-256: fbcf067b0a4ce2b509571f45bccc439abed801eee7ec6114d7aa3a45fedb9397
234 Risk Score

Malware Insights

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

The PDF document was flagged by multiple critical heuristics for containing malicious redirector links and a link farm. The primary malicious URL identified is https://ttraff.ru/pify?keyword=alfabeto+japones+kanji+pdf, which likely serves as a gateway to further malicious content. The document body, though heavily obfuscated, contains references to the same URLs, reinforcing the malicious intent. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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=alfabeto+japones+kanji+pdf In PDF document text
    • http://files.icthope.org/uploads/1/3/1/4/131453124/xejegexon.pdfIn PDF document text
    • http://files.nathanjroberts.com/uploads/1/3/0/7/130775743/68edd.pdfIn PDF document text
    • http://files.citynorasprings.com/uploads/1/3/1/0/131070112/9604318.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/1/0430/0079/1191/files/84730851942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7713/1683/files/ejercicios_abdominales_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5887/8872/files/pasiresetabizivivini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3046/3142/files/76888558452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2632/5402/files/58105546291.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5650/4744/files/jinatemofufixamipejuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5096/6950/files/pinukexofategoduxujata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6609/6806/files/wujovewemivixiris.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6462/2246/files/tosajejetivuwupeguwuro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/73768917897.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_off00006f6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6A 9152 bytes
SHA-256: 2790d239985d552233368b29f307156b3d1a35a7857e7d8662bc7d99c8ac305c
font_01_sfnt_off00008e64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E64 5208 bytes
SHA-256: c8e149c8a9fd65cf576d337a19e5694b5cbc864ef8452850df1037669cfe09b2
font_02_sfnt_off0000a036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA036 12656 bytes
SHA-256: 7d3feb7e0ad22dfa6f50389c2b764a99690a05a563f1a6cdfdc7365f6e109ca2

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