Malicious PDF — malware analysis report

Static analysis result for SHA-256 1102958c4f53027d…

MALICIOUS

PDF

46.6 KB Created: 2020-08-13 07:15:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8079e838987c3e30dbe113fb35da94d0 SHA-1: 5e27b86f129bd36d753f29f697e6fe358ca5bd7a SHA-256: 1102958c4f53027db02c9eb7366e9475420b5a125d2a87317e4b511174ab40c3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.ru). This service is known to host malicious content and is used here to lure victims with a fake free download. The ML classifier strongly supports the malicious nature of this PDF.

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/wb?keyword=la%20vita%20di%20galileo%20brecht%20pdf In PDF document text
    • http://files.beasttviptv.com/uploads/1/3/0/7/130775402/481fa149243.pdfIn PDF document text
    • http://files.freedom-conspiracy.com/uploads/1/3/0/7/130740297/notoxegep.pdfIn PDF document text
    • http://files.thirdcinemaproductions.com/uploads/1/3/1/3/131379749/sonazez.pdfIn PDF document text
    • http://files.fremonthog2232.com/uploads/1/3/1/4/131453156/3048822.pdfIn PDF document text
    • http://files.acousticdesignstudios.com/uploads/1/3/1/3/131380741/jituxemeb_javezu.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/1/0437/1107/0357/files/100_statistical_tests_gopal_k_kanji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/9984/4762/files/captain_marvel_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3208/3612/files/27024876070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0531/2154/files/pamisowosowuletuzowinelup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3374/7878/files/10909109143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1251/1128/files/tapafosodizewu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9683/4212/files/lefugogakapegiguwuxomovax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3953/8851/files/86255375270.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9513/7187/files/twitch_emote_requirements.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuwizesovipijekugufex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7229/8918/files/25172452470.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4143/8366/files/magnificence_affirmation_cards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5729/9097/files/zoroni.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/60233972239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1289/7437/files/46959005833.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_off00007551.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7551 5380 bytes
SHA-256: 10f4a0333c275316d2f112c67f302036d8e9b23905bf105a77e283d3641ca776
font_01_sfnt_off0000879a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x879A 11184 bytes
SHA-256: 438325c96f17b7d95d8b3a6032aeec983d3a4ff32be5f89b61030d222eef840d