Malicious PDF — malware analysis report

Static analysis result for SHA-256 1853d14bab4b81c5…

MALICIOUS

PDF

31.9 KB Created: 2020-08-24 04:47:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4046105432e3ff720076620f2ca1600c SHA-1: 581f48eace42a3edf7190004e0835980fafda124 SHA-256: 1853d14bab4b81c51fd6f118234053eda2e8f99b120fa0b2480d6bafe28ae901
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is designed as an image-based lure, presenting a screenshot of a study guide to entice users to click a link. The primary link, 'https://ttraff.com/pify?keyword=chapter+12+forces+and+motion+study+guide', is identified as a malicious redirector. The document also contains a large number of links to other PDFs hosted on Shopify, likely part of an SEO link farm to obscure the malicious intent. No scripts were extracted, but the redirection mechanism is a common tactic for phishing or delivering further malicious content.

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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 31 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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=chapter+12+forces+and+motion+study+guide In PDF document text
    • http://rumega.laquintonholliday.com/uploads/1/3/2/6/132695306/jekikizi_suxim.pdfIn PDF document text
    • http://dunibusix.theworldofboden.com/uploads/1/3/0/7/130739290/wunupokuwabojegikizi.pdfIn PDF document text
    • http://figoxowuv.centerforhealthydevelopment.org/uploads/1/3/1/1/131163599/gegesewid.pdfIn PDF document text
    • http://xorix.lifelonglearningpath.com/uploads/1/3/2/8/132816117/5810501.pdfIn PDF document text
    • http://files.darajafoundation.com/uploads/1/3/1/4/131483279/5f69d3ec7f5.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/1/0430/1104/7575/files/puterelabigeromuxow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2328/6940/files/22188896459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6950/4662/files/moviebox_ios_10_no_jailbreak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7732/8278/files/discord_overlay_obs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6245/9544/files/60734973262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4796/8149/files/tiluvatidabibitaputopasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1371/5606/files/gazujizogopaliwewodok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/2685/7374/files/a_train_9_v4_0.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5280/0929/files/seismic_performance_level_rating.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/0273/6279/files/linear_algebra_problems_with_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/partition_beyonce_mp3.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_off000044c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44C9 5728 bytes
SHA-256: 3289ee7c55b1d4081fc7871de30297424437094dfcbbc826ab0e789a6e2295d0
font_01_sfnt_off0000582b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x582B 7780 bytes
SHA-256: bef3830480ea57869117924b7bca29f1d0dd02a3483bf501a24c0776fc9b3b9b