Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc982254e0231cfa…

MALICIOUS

PDF

34.3 KB Created: 2020-08-28 05:09:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 07b5d78db33cef4261202240e40124ff SHA-1: 2a3d0dd52237f1c7cc5701b8ca0830bae044a230 SHA-256: cc982254e0231cfaa11b3488c2351e4298d22556ba2b80ad9e1f3b334d972c29
194 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and heuristics indicate it contains a malicious redirector link. The document body, though heavily obfuscated, contains text related to drawing comics and includes the malicious URL. The presence of numerous embedded links, many pointing to the same redirector service, suggests an attempt to distribute malicious content or phishing lures.

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.ru/pify?keyword=aprender+a+dibujar+comics+estilo+marvel+pdf In PDF document text
    • http://files.edotsdesign.com/uploads/1/3/0/8/130813887/4843517.pdfIn PDF document text
    • http://gofuw.amochiropractic.com/uploads/1/3/0/7/130738615/duwisofafevonenoj.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/1/0431/4506/8699/files/38165653272.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6421/4182/files/sims_makin_magic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/3640/4900/files/euploidy_and_aneuploidy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1780/3675/files/some_type_of_love_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6090/1528/files/mcdonalds_breakfast_coupons.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7162/6652/files/26593409191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9096/8729/files/abbi_glines_rosemary_beach.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4772/1892/files/tufidifokeresar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7522/1144/files/the_escapist_2008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3929/3593/files/gogelimujofed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9979/1265/files/apk_saint_seiya_awakening_taiwan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8071/8238/files/amadeus_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3159/2088/files/55485500410.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 1

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_off000047a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47A9 5568 bytes
SHA-256: 9966b70619ef987a3a0096eba1100863a1bb93911b6e800f9be2891109831046
font_01_sfnt_off00005a72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A72 9928 bytes
SHA-256: 65af00086333ca3e44efbe177ead17fb49989042ed81d11458f8930f91061254

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