Malicious PDF — malware analysis report

Static analysis result for SHA-256 aff8e04d6bd83aba…

MALICIOUS

PDF

39.4 KB Created: 2020-08-06 06:24:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1a076c55b4eb94861599d1c4c6f942d1 SHA-1: d50119798a7cc4dd7fa4bad1099df03efe870963 SHA-256: aff8e04d6bd83abaef1b49f5620c888be648631d6e503cd808ff08cd2e86520b
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=bobina+toroidal+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on cdn.shopify.com. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the primary malicious URL.

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=bobina+toroidal+pdf In PDF document text
    • http://rawazola.fulbrightpta.com/uploads/1/3/0/7/130739826/fidobokunag_vekidat_xemon.pdfIn PDF document text
    • http://wubewuno.narayanahotelandresidences.com/uploads/1/3/1/6/131607131/xunexuperutesiz-ginavidomevar-pijugepokolig-pukinivufe.pdfIn PDF document text
    • http://files.mistoyo.com/uploads/1/3/0/7/130775934/3634499.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/1/0428/7542/0835/files/68151884447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3187/1139/files/72676668002.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1728/0408/files/65717354210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/9006/3003/files/atmosferas_peter_zumthor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0753/3475/files/36859921713.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3536/1442/files/2004989068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/7536/7065/files/how_to_hack_psp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6666/1800/files/gevogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8280/0542/files/jojezim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7375/6572/files/basic_concepts_java_programming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/gisiliju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/96221042447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0627/9323/files/matusasipafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/6447/2231/files/cbse_8th_class_maths_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6988/8920/files/4598269154.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_off00005194.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5194 4716 bytes
SHA-256: 223b4627f7e4ef40191d17cc9f9ade2698f562d411287c87f9ef91c484aa25db
font_01_sfnt_off0000618a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x618A 9792 bytes
SHA-256: ccb87677005f24d6b3de1fa6fb5d96c7b1db81dbfabf01e48280999edbe6dc37
font_02_sfnt_off000082f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82F9 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2