Malicious PDF — malware analysis report

Static analysis result for SHA-256 af66c0e5b91d39cc…

MALICIOUS

PDF

48.5 KB Created: 2020-08-10 09:42:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8966d57809c22217cc01b25f43d3f8bd SHA-1: 022f7c02470b366337573a190cff246f93ea9419 SHA-256: af66c0e5b91d39cc8fd7294dadafd86f2802136aaa78d6c8f1b9139ff791b50a
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=cashflow+quadrant+book+pdf+download'. The document body also contains this URL, suggesting it is the primary lure. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to manipulate search engine results or distribute content. The file's purpose appears to be directing users to malicious infrastructure.

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=cashflow+quadrant+book+pdf+download In PDF document text
    • http://files.sunwardtours.com/uploads/1/3/1/8/131856306/soxufesubi-busuxi-ropewum-musivekiz.pdfIn PDF document text
    • http://files.mutualdialogue.co.uk/uploads/1/3/0/7/130739837/sasixuruton-gegejisugimak-vaxamuninip-kowunizobazo.pdfIn PDF document text
    • http://jivukapu.delcopasr.org/uploads/1/3/1/3/131380213/fbc4b52365846b8.pdfIn PDF document text
    • http://files.silentvoices.org/uploads/1/3/1/3/131382330/zemetimetelawilaniro.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/1/0434/1792/7837/files/53926623415.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6379/5094/files/pdf_file_to_jpg_image_converter_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9977/5381/files/werasek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/veligepuxefedugikaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9603/9839/files/66607979710.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/14307793912.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/82595467958.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9795/5229/files/90688148010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6775/8997/files/oxford_bookworms_library_stage_1_the_wizard_of_oz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2661/9288/files/rilarabiwavix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5685/5190/files/tutorial_arcgis_10._3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8239/0435/files/15213514390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8342/3128/files/zujigo.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_off00007119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7119 5288 bytes
SHA-256: 703fad4c551430b36c2cd9b7dc473cb044e3d768780a62ea8275b2992cb89fa8
font_01_sfnt_off00008310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8310 10308 bytes
SHA-256: 8e00ee1e26025f41dc53f263ffa3702b0116ce09102ab587acedf430ae2a2653
font_02_sfnt_off0000a64e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA64E 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34