Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fe6d07c3b2a1397…

MALICIOUS

PDF

37.4 KB Created: 2020-08-12 16:49:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 375c0213a420df357978e640bd0c2372 SHA-1: 8202d84a7bedb025e335c4a69bd5f915a945a898 SHA-256: 7fe6d07c3b2a139797fb796bda0d2ae18e44572100090f3044c34edbbc94735c
154 Risk Score

Malware Insights

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

This PDF file contains a link to a known malicious redirector, ttraff.cc, which is likely used to distribute further malware or phishing content. The document body and embedded URLs suggest a lure related to a 'pandemic jogo manual', aiming to trick users into clicking the malicious link. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/wb?keyword=pandemic%20jogo%20manual
    • http://files.animachristiretreats.org/uploads/1/3/2/7/132740296/951202.pdf
    • http://files.localumass.com/uploads/1/3/1/4/131454501/866f14b76dbf5.pdf
    • http://files.mikebernalmedia.com/uploads/1/3/1/4/131408256/faa484a.pdf
    • http://files.mattiacupelli.com/uploads/1/3/2/6/132695730/bojuwopolumid.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/7251/1386/files/rivabilimaturom.pdf
    • https://cdn.shopify.com/s/files/1/0434/8618/3577/files/13679968182.pdf
    • https://cdn.shopify.com/s/files/1/0430/6026/5117/files/sivipewiwofijeli.pdf
    • https://cdn.shopify.com/s/files/1/0449/0821/6487/files/bovef.pdf
    • https://cdn.shopify.com/s/files/1/0432/0349/4043/files/carcinoma_epidermoide_oral.pdf
    • https://cdn.shopify.com/s/files/1/0434/0131/4456/files/dofeputuwezuwudufurovisof.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/pogaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/3505/7559/files/sudco_mikuni_tuning_manual.pdf
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/kirchhoff_s_current_law_derivation.pdf
    • https://cdn.shopify.com/s/files/1/0438/3129/6160/files/bearing_selection_guide.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005418.bin
ef94c58505674c505e757ab529c91b3f0a1c4773d7d3f445090dd995142721f1
pdf-font-stream PDF embedded font (sfnt) at offset 0x5418 5060 bytes
font_01_sfnt_off0000653b.bin
d1a5a261461df570d65b6480a8143ad4deb37b22adb73414f28b6c80456b5cdf
pdf-font-stream PDF embedded font (sfnt) at offset 0x653B 10684 bytes