Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca9e7bbc67291905…

MALICIOUS

PDF

41.7 KB Created: 2020-08-06 17:44:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 517e2dcbcd40872da0d7a3c751aa0618 SHA-1: e0ac479e4e4ad87bf8cfc2cff4b4cf1a3bc8ee67 SHA-256: ca9e7bbc672919051371547c3734f7f316ead99ce523847fa3110498ede686b8
194 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link and a large number of external PDF links, indicating a link farm strategy. The primary malicious URL identified is https://ttraff.cc/pify?keyword=bacterias+anaerobias+facultativas+pdf. The document body contains obfuscated text and embedded URLs, consistent with attempts to lure users to external sites. 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=bacterias+anaerobias+facultativas+pdf In PDF document text
    • http://files.kerrionmission.com/uploads/1/3/2/6/132681452/wepodamus.pdfIn PDF document text
    • http://files.tenstringedlyre.com/uploads/1/3/2/6/132681488/ac0c1d1.pdfIn PDF document text
    • http://files.msbutchersclassroom.com/uploads/1/3/1/4/131406841/vofawojolu_vodovatuf_gakisaxezoxem_kuzozuluzenubi.pdfIn PDF document text
    • http://files.seagrasspottery.com/uploads/1/3/1/8/131860479/22ae729c5e.pdfIn PDF document text
    • http://files.abivaonlineresources.com/uploads/1/3/0/8/130813612/fa0ba13b4e.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/1/0428/6011/8175/files/53634709384.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9482/5376/files/tokaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8632/2593/files/32843771755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6197/8023/files/zufefizukomarofedinidejon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6006/7480/files/rifaxavosiresugakuxob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/nazeni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7069/3284/files/44256274420.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nadogenomaxijedunebenez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4845/0718/files/buwita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5511/9520/files/the_wolf_of_wall_street_google_drive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0261/8278/files/exceptional_c_herb_sutter.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A9 5400 bytes
SHA-256: f0c40356296b31a83ea1900c9f1fc7a4c98fce44ab59ff0f1e13670f0a5793cd
font_01_sfnt_off00007716.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7716 10152 bytes
SHA-256: 69e0d2429e8edb4aec6a76f1d1c82dcf2d14cc0f67fac418c50a0b453c7c7300

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