Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9e281e15d3f9f8d…

MALICIOUS

PDF

32.3 KB Created: 2020-08-12 06:18:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4971d3ae8fb80937660d5db08043b2b9 SHA-1: 799c8547d8374d2c9df85518a498520ef3686188 SHA-256: a9e281e15d3f9f8d82464d2e7784d1646f5d5ba4db36c352cc6a6938d9e924c0
214 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and multiple links, with one critical heuristic identifying a link to known malicious redirector infrastructure (ttraff.com). The document body, though heavily obfuscated, contains a reference to the same malicious URL. The presence of numerous external PDF links suggests a link farm intended to drive traffic to potentially malicious sites.

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.
  • Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
    A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
  • 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.com/pify?keyword=altalink+c8055+manual+pdf In PDF document text
    • http://demeweke.profi-solar.com/uploads/1/3/0/7/130775350/d5b5750.pdfIn PDF document text
    • http://zusidiza.whyrunnow.com/uploads/1/3/0/7/130775413/740784085.pdfIn PDF document text
    • http://files.whiteroseartstudio.com/uploads/1/3/0/8/130813314/1195778.pdfIn PDF document text
    • http://files.aikorobinson.com/uploads/1/3/2/6/132680932/1766606.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/1/0431/3802/3586/files/vitufeweletapotudamotaged.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8475/0743/files/voziforiga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6596/5718/files/knowledge_of_accounting_principles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4016/7320/files/sons_of_anarchy_season_1_torrent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6232/0536/files/chamonix_piste_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9191/7989/files/active_voice_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rasamonuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9724/1240/files/kotegefokolasodipinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0935/1575/files/bawujekaxurilizafuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0767/9397/files/english_adjectives_exercises_with_answers.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 6

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_off00004281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4281 5540 bytes
SHA-256: 0a287ad2916bd6ca37645bc386f214fc6251653879ac5689bafdd49430220c9a
font_01_sfnt_off00005540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5540 9128 bytes
SHA-256: 8aa30ab0e80fbf8eda9e663209a2984f18ecdf63cad6791fb21c739394bfd882

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