Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e5d760cfdc5e04e…

MALICIOUS

PDF

40.3 KB Created: 2020-08-15 07:17:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0b0e22428230a91f1c939f55fed605d SHA-1: e0e428df420f22d1e9a72151937ecba99626b0d4 SHA-256: 6e5d760cfdc5e04ed6ea958c28f2e795df2ef3e9adc0bee029a2f7765b0855ce
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a critical redirector link pointing to 'ttraff.ru', which is associated with malicious activity. The 'SE_MFA_LURE' heuristic indicates the document is designed to trick users into providing sensitive information, such as one-time codes or MFA approvals, consistent with credential phishing. Although no scripts were extracted, the presence of embedded URLs and the lure suggest an attempt to redirect users to a phishing site.

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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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=aadhar+card+online++pdf+password
    • http://munatoki.beetlesofcuyamacamountains.net/uploads/1/3/1/4/131453598/komokisogaxaz.pdf
    • http://files.trueelevation.org/uploads/1/3/2/6/132695416/669372.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/5081/8969/files/bugenexar.pdf
    • https://cdn.shopify.com/s/files/1/0435/3536/8346/files/edit_to_word_online_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0436/5385/7433/files/33690527926.pdf
    • https://cdn.shopify.com/s/files/1/0430/7589/5450/files/lanijedu.pdf
    • https://cdn.shopify.com/s/files/1/0432/2482/6014/files/gumixerureguxixiriluf.pdf
    • https://cdn.shopify.com/s/files/1/0440/0440/9494/files/6th_grade_reading_passage.pdf
    • https://cdn.shopify.com/s/files/1/0433/5802/7928/files/werejifajox.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/zulelenuvawifebe.pdf
    • https://cdn.shopify.com/s/files/1/0434/3624/5144/files/numipupa.pdf
    • https://cdn.shopify.com/s/files/1/0436/4635/3561/files/starbucks_vision_statement.pdf
    • https://cdn.shopify.com/s/files/1/0435/1619/9064/files/zegatoxijajivukuj.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_off0000605c.bin
c4d17a0dc29e660de382821fa60f588b02e0ab06ea2ac20931ee3e5fed614cf0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x605C 5324 bytes
font_01_sfnt_off0000727a.bin
6b60e8c7636e62e6f47e9beceff2dda7826778644944c550eb0c2726d5d2b0ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x727A 10060 bytes

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