Malicious PDF — malware analysis report

Static analysis result for SHA-256 0dbdd788215d63fb…

MALICIOUS

PDF

45.4 KB Created: 2020-08-08 07:58:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ddb2daa316144d76d2ec3eb91417942b SHA-1: 273944227fa34316df2e59985c76ed4b56dca17d SHA-256: 0dbdd788215d63fb7f476a4e4927b0f2f9eeadf7dc07c67720a9487b17fc66b4
194 Risk Score

Malware Insights

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

This PDF document contains a large number of links, many of which point to redirector infrastructure. The primary redirector URL is https://ttraff.cc/pify?keyword=basic+civil+engineering+questions+and+answers+pdf, which is known to host malicious content. The document body text, though obfuscated, also contains this URL, suggesting a lure for users to click on it for a supposed download. The ML classifier strongly indicates maliciousness.

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.cc/pify?keyword=basic+civil+engineering+questions+and+answers+pdf In PDF document text
    • http://files.manhattangrace.org/uploads/1/3/0/8/130813841/fezoturegatez.pdfIn PDF document text
    • http://files.wiltshire-epc.co.uk/uploads/1/3/1/4/131407705/disasuxuwogim-suzanivisej.pdfIn PDF document text
    • http://files.spartanburgband.org/uploads/1/3/1/0/131070508/zijosamiwetematefu.pdfIn PDF document text
    • http://files.brantfordtrackandfieldclub.com/uploads/1/3/1/3/131383478/9095082.pdfIn PDF document text
    • http://jukiniwom.firstbaptistchurchleroy.org/uploads/1/3/0/7/130775934/ponibixixemuj_kunalatifu_juxaganofukirov_vosadeb.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/1/0435/2249/0532/files/probiotics_in_fermented_foods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8262/0834/files/16508238525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2883/2675/files/11631755696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0952/1317/files/giginaweginojifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3295/1446/files/6267219907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5085/9670/files/learning_generative_adversarial_networks_next_generation_deep_learning_simplified.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7946/7170/files/50056080619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51025654711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/lefigonotuzakepajarete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8665/2316/files/vazezowowutefefajinuba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0159/3505/files/83859784337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4713/2068/files/powal.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_off00006bd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BD0 5652 bytes
SHA-256: 9df1018683dbf7a641ffcbcfc0cb577b653610f7343587c0147f143cc220a406
font_01_sfnt_off00007f29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F29 13020 bytes
SHA-256: 6508315ec93ccb38cf8358b1f7bebc966d5dece8e73c1ca62b6e47bac6a182fb