Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfa09116a6e789cc…

MALICIOUS

PDF

65.3 KB Created: 2020-08-20 22:27:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4719e979687172da97043315a193cf8f SHA-1: fe265103a2170ce219a5c57e0e52cb04e43192b3 SHA-256: cfa09116a6e789cc729af3e2244309056b78d800ad4552a86139a73e95314c7f
194 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing indicating a malicious redirector. The primary URL, 'https://ttraff.cc/pify?keyword=adc+post+full+form', is identified as a malicious redirector. Another heuristic indicates a PDF link farm, with 'https://cdn.shopify.com/s/files/1/0430/8631/5682/files/36624171134.pdf' being the first URL in this farm. The document body contains garbled text but also includes the redirector URL, suggesting it's part of the lure.

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=adc+post+full+form In PDF document text
    • http://files.paulsfranchiseleague.com/uploads/1/3/1/4/131438249/kabuvoxije_kuvorenuzixuw_raxejusub.pdfIn PDF document text
    • http://files.littlefeatherfoundation.com/uploads/1/3/0/7/130740231/fojosiz.pdfIn PDF document text
    • http://pegusemo.simplywine.com/uploads/1/3/2/8/132815806/pukowomutovuwokoj.pdfIn PDF document text
    • http://files.heatherbrener.com/uploads/1/3/0/8/130814169/ef7da9d64e098f.pdfIn PDF document text
    • http://files.abortion-decriminalisation.org/uploads/1/3/1/3/131380612/4258888.pdfIn PDF document text
    • http://www.opentle.orgIn 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/1/0430/8631/5682/files/36624171134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1103/0683/files/21000706897.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8138/4604/files/google_sheets_sumif_across_sheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0336/2973/files/bugeriduvatab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9392/1685/files/insertar_imagen_en.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6252/4069/files/30722823197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8196/5474/files/45510455240.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/51073553930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xigidewepiwunabifaw.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://www.gnu.org/licenses/gpl.htmlIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000b473.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xB473 8452 bytes
SHA-256: 492df2616ede29e6eef835142b973800b8afce1bb9de236db97ca9cdb5544789
font_00_sfnt_off0000a349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA349 5080 bytes
SHA-256: 90439391b42819bc4e45f71461b64421f13316733a80346d605263690f224701
font_02_sfnt_off0000cbd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBD9 13488 bytes
SHA-256: f19bc60222a05bb127e560312121775706202367d9b3506012f7434686950bee

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