Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9f1ebb8ebb61b11…

MALICIOUS

PDF

41.6 KB Created: 2020-08-13 23:58:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cd89efd7daf0e3567a3fc8908f0f3ff6 SHA-1: 625d291c259dcc13356ac61400033c9ee62be813 SHA-256: f9f1ebb8ebb61b1124fb8049b42f868a4a8096ab13fbf55077481bdebe1ebc40
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many of which point to a redirector service (ttraff.cc) known for malicious activity. The document body, though heavily obfuscated, also contains the same redirector URL and other URLs that appear to be part of a link farm. This suggests the primary purpose is to lure users 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=audacity+plugins+autotune+free In PDF document text
    • http://files.nedwhitebooks.net/uploads/1/3/1/3/131382141/4a4685c1.pdfIn PDF document text
    • http://nakit.monsterinktattoostudio.com/uploads/1/3/1/8/131871921/8816234.pdfIn PDF document text
    • http://files.bluegooseregina.com/uploads/1/3/0/7/130775441/wuxoso.pdfIn PDF document text
    • http://nibona.pepelapoule.com/uploads/1/3/2/7/132740515/63b1af6ccd11.pdfIn PDF document text
    • http://jetol.malagaholidayrental.com/uploads/1/3/2/7/132712354/nososagebow.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/1/0435/5522/5763/files/connectors_in_english_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8354/6267/files/dufevusinixedumetuzupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3899/7669/files/converting_kindle_format_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6799/8359/files/numubegipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6563/0102/files/lawuriwufapoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8523/4338/files/75449695290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5699/6247/files/241655079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3696/7063/files/41564854996.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/jufuguvir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/suicide_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nulanevu.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 4

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_off0000645d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x645D 5416 bytes
SHA-256: 1ffa66864ee76f4337c1e22d7983aeeb47d24f2f3832f6ac7937ad86040d5805
font_01_sfnt_off000076dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76DD 10152 bytes
SHA-256: 6855de0b1c89a76f86000e0b2a32a0968d9a01632bdf99441a55012548cf127a

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