Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab28006b53ec61ba…

MALICIOUS

PDF

34.6 KB Created: 2020-08-03 15:50:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9eaa5513c935fac3c48be76266aebafe SHA-1: 00a4049cde4d7fa377d1a2e19f9e6348b68cef92 SHA-256: ab28006b53ec61ba197ce2aecd0c11ad3ad8d9e0b4a4fa919fd52089b827d5ab
202 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.com. It also contains a PDF link farm heuristic, indicating a large number of outbound links, many hosted on cdn.shopify.com. The document body text, though heavily obfuscated, contains the same malicious URL and benign-looking PDF URLs, suggesting a lure to trick users into clicking the malicious link. The presence of a 'download button' heuristic further supports this social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=possessive+adjectives+exercises+for+beginners+pdf In PDF document text
    • http://fenaniz.deboethiopia.org/uploads/1/3/0/8/130873804/6241e7fc56.pdfIn PDF document text
    • http://files.rebuildinglauren.com/uploads/1/3/1/3/131380995/d54bab41c5.pdfIn PDF document text
    • http://files.dopeceiling.com/uploads/1/3/2/6/132682883/wenegaxomax_dijunubawu_nuvibexibobaxi.pdfIn PDF document text
    • http://files.venturecreationcafe.com/uploads/1/3/1/3/131383934/letewopebivigif_webimikozezo_fozapisagum.pdfIn PDF document text
    • http://files.josemleyva.com/uploads/1/3/1/4/131453084/cd9f69cd.pdfIn 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/1/0435/2029/5064/files/85905706755.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8305/4757/files/fubuvadedaxozaxedatu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2283550224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8265/2579/files/optics_eugene_hecht.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3164/1762/files/dikexidafokatakoju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5863/4658/files/4762561614.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2342/5955/files/misaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6666/1800/files/dugovufuxitufutetoxafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0958/8897/files/14388954915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9268/0605/files/nurewurenoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/59966474344.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4230/8250/files/directional_hypothesis_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85450973079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0360/8214/files/6696403532.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000492d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x492D 5636 bytes
SHA-256: 77012bd97083528d28271ae189f232d1073e5aa02faa51c8a6a657e787a21d7b
font_01_sfnt_off00005c7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C7B 9500 bytes
SHA-256: b5ee1131463dc624043bfba946f6d067c0e417c76cff86af13cc2bb843741720