Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4909e84e372d674…

MALICIOUS

PDF

46.8 KB Created: 2020-08-06 02:57:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 93207ac03ffdfa2cbb581f5aad1fde2b SHA-1: 0c37787d2721fab71ecce48ed35d755640dbb667 SHA-256: d4909e84e372d67404b6e1f8c4da9a0ed7236fe349883bc163ca412b053b4d3b
194 Risk Score

Malware Insights

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

The PDF contains a lure related to "streamlined sales tax pdf" and embeds numerous links, including a known malicious redirector at ttraff.cc. The heuristic firings indicate this is a classic advance-fee fraud document shape, likely intended to trick the user into clicking malicious links by promising access to tax documents or similar information. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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=streamlined+sales+tax+pdf In PDF document text
    • http://files.mrobinsonartworks.com/uploads/1/3/1/4/131454523/dowasow_pugewudovirame_rufurosol_wiwavife.pdfIn PDF document text
    • http://files.churchbeyondbelief.com/uploads/1/3/2/8/132814119/nunamusuw.pdfIn PDF document text
    • http://files.imperialbathtreats.com/uploads/1/3/1/4/131453022/6575651.pdfIn PDF document text
    • http://jifara.mosaicsbysandisykora.com/uploads/1/3/1/8/131856257/2002616.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7719/8229/files/xajasesirozotoro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6862/8890/files/kiwiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5752/1574/files/29205065660.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8510/3255/files/66128302277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3302/4929/files/songs_to_twerk_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4695/2351/files/47012153918.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7865/5903/files/19988680951.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/1197741773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3407/4523/files/54013690172.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4595/1400/files/dimeluromodaruvifol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6608/7838/files/28869605415.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8385/8080/files/64626384601.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3029/0327/files/64433939043.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006959.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6959 5036 bytes
SHA-256: 2e21c56a85553deff8cca7f55a91045d1beca28f33c75eecbc5d9722ecc658a2
font_01_sfnt_off00007a4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A4E 11016 bytes
SHA-256: cda4f3ffc4bab3c7c9248fa41cd8f3c2bc0420612e0860e8ce863f5dd4c8867a
font_02_sfnt_off00009fe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FE1 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333