Malicious PDF — malware analysis report

Static analysis result for SHA-256 2098737bfc53e70d…

MALICIOUS

PDF

49.7 KB Created: 2020-08-06 11:31:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 65dcba512e143524bd9bcd4c177195fe SHA-1: c34421b02248ccec31ba33d80c72c7a93d305cdc SHA-256: 2098737bfc53e70d5005b4bee14c6e776883ef6ae0ca96efc984533a81522a14
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to benign Shopify domains, but a primary link directs to a malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains text related to 'Ielts vocabulary list for listening pdf', suggesting a lure to entice users to click the malicious link. The heuristic firings confirm the presence of a malicious redirector and a link farm, indicating a phishing or content-distribution attack.

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=ielts+vocabulary+list+for+listening+pdf In PDF document text
    • http://files.sunflowerpreschoolsebastopol.com/uploads/1/3/1/4/131454523/31dde.pdfIn PDF document text
    • http://files.peterhendricksonarchitect.com/uploads/1/3/1/6/131606248/sonorowisimelo.pdfIn PDF document text
    • http://files.hanberryhedgehogs.com/uploads/1/3/1/4/131482878/f18dbd66caa9.pdfIn PDF document text
    • http://files.tacameraclub.org/uploads/1/3/0/7/130776460/jokuwegawulukas.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/1/0431/5188/4449/files/30499125212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5150/7094/files/49001332345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9373/8143/files/67135729382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6394/8950/files/xupovotet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0833/3736/files/thaddeus_rowe_luckinbill_jr.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1536/2984/files/vukozixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1613/4551/files/nogibitituze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/57851637960.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7012/8277/files/retanarezirujakiwepa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6413/9669/files/fikefaxuterijodijukupes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3712/9895/files/wasojopesopewiwanet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9846/4665/files/ascending_and_descending_order_worksheets_for_ukg.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_off000077e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77E7 2828 bytes
SHA-256: eec2311198495a4bc353016469730966835d49679daeed18a98faa9ab15954d4
font_01_sfnt_off000081f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81F1 5564 bytes
SHA-256: 00d7c70e143b977521790a81e99d05568a0f0af81617bcff128a48a62e507d77
font_02_sfnt_off000094f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94F6 10744 bytes
SHA-256: d9c2080e08eba4946ff7ffb15f2c62e7204540866011ade3b660174bfb1e5878