Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f374781bf393110…

MALICIOUS

PDF

49.0 KB Created: 2020-08-21 20:01:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 66ec5059a74fb274a0f57ede99e8e750 SHA-1: a6126c0590afa051c2ed6bc4b704d37eeb17c669 SHA-256: 9f374781bf393110c1037666c7d06c460589b698f9d8767c73fa91e1b980484e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic indicates that the PDF links to a known malicious redirector infrastructure at ttraff.com. The document body, though heavily obfuscated, contains the same URL as the malicious redirector, suggesting the document's primary purpose is to drive traffic to this malicious site. 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.com/pify?keyword=channappa+channegowda+janapada+song+lyrics In PDF document text
    • http://files.sweetsister-chicsister.com/uploads/1/3/0/7/130776518/6ed655a65662.pdfIn PDF document text
    • http://bifumog.nflpicks16.com/uploads/1/3/1/4/131407089/webigiv_vavaze_pirenusiwubo.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn 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/1/0430/4257/0402/files/95782100855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8439/8244/files/52405832462.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2255/7095/files/lugodufuxukodejunizi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/fefixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3349/1606/files/51706186102.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6958/8124/files/36122664551.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2883/0625/files/dolamaviti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8421/0583/files/flash-_all._bat.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00006997.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x6997 11144 bytes
SHA-256: 3f0f682b2c5d23e482d64e04b44fdcab2f95766f8e56ee721af3d5fc1d4d5cee
font_00_sfnt_off000056d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56D0 5508 bytes
SHA-256: e33ba744cdd881831e0f84fce32e753d42e435b96be8eea0c07223b79bf0f7e2
font_02_sfnt_off00008719.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8719 2116 bytes
SHA-256: 1f756b46481ac718095810e133e155ec1caf818687d25c20e8b002f727d713c7
font_03_sfnt_off000090c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90C5 10620 bytes
SHA-256: 09366dea9a440b01361af8ededf461f4737682c0d78fe59904b708e44880aa0e

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