Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d9c5d3d9c27da1c…

MALICIOUS

PDF

44.5 KB Created: 2020-08-21 09:20:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 99307f42a5288fc193372d1f2551142b SHA-1: 2132629cff4c88ac218e3020a35324ac7373e740 SHA-256: 0d9c5d3d9c27da1c6bb802bd3bc599612ffa51d1097dbcb9625813536535a1f8
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically a URL related to 'google play store apps'. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, contains the malicious URL and references to benign Shopify links, likely part of a link farm to obscure the true destination.

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.ru/pify?keyword=google+play+store+apps++2018 In PDF document text
    • http://pejazadug.womenintrousers.org/uploads/1/3/1/4/131453133/6351557.pdfIn PDF document text
    • http://files.dowdystaxidermy.com/uploads/1/3/1/6/131606321/masomoxez.pdfIn PDF document text
    • http://files.lhschoral.org/uploads/1/3/1/4/131409508/sofunenita.pdfIn PDF document text
    • http://pawuki.robbaughman.com/uploads/1/3/1/3/131383388/ximiwawiwedorad_zokiretam_dubopotafazu_jowepuketuka.pdfIn PDF document text
    • http://nojazeba.timberridgeeqcenter.com/uploads/1/3/2/7/132740478/385349.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/1/0427/8213/0332/files/20843104391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4398/6327/files/when_things_fall_apart_pema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6585/1542/files/46807481871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7750/0056/files/singh_is_bling_movie_songs_ming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7035/6637/files/14745105516.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8648/6440/files/36845913826.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5652/8537/files/guwuji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7232/3737/files/failed_to_login_invalid_session_minecraft.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/0252/3812/files/physical_science_grade_12.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0264/2075/files/nezorizok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2496/6044/files/burrows_casebook_on_contract_law.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3858/8573/files/rotary_lift_manuals.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_off00006ce9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE9 5640 bytes
SHA-256: 4e187b836bdf2725f6696bd017611ba965aae071881dec3f3bde44a71dfe3cf6
font_01_sfnt_off0000803f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x803F 10788 bytes
SHA-256: 06b03cbff4f4442c0da6852ca78408943cced193b944e549a6ee0bd8d8a47c54