Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d03c70ec609588c…

MALICIOUS

PDF

48.2 KB Created: 2020-09-01 00:02:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f3944e07912fc893041904b8aa1d3766 SHA-1: 0e779c68d98c6b72d7ed0d36a3b92c44233623b2 SHA-256: 6d03c70ec609588c6117041fd0005270ad4fb5b0809829bf2d24597b6a908111
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'alcohol meter information' and the malicious URL. The presence of numerous external links suggests a link farm or SEO poisoning attempt to drive traffic to malicious sites.

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/wix?keyword=alcohol+meter+information
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/ae059d_b4dd84cf1cf441f19eb6db97c31e514c.pdf
    • https://static.usrfiles.com/ugd/98857b_eacaec97aee04142a76f6772b5247f16.pdf
    • https://static.usrfiles.com/ugd/12745a_1226cd3a94184aca83c46203ac45d51b.pdf
    • https://static.usrfiles.com/ugd/136d07_830f6ba3f9ee4a16a75b960999804a44.pdf
    • https://static.usrfiles.com/ugd/10e3af_100071eb8a584172b9597190757ad2d6.pdf
    • https://static.usrfiles.com/ugd/10e3af_5f8059b11f3548a9b7d6ed25e9e0965c.pdf
    • https://static.usrfiles.com/ugd/834936_e279eba4d990479bb12fb7e4c96b9aba.pdf
    • https://static.usrfiles.com/ugd/ca300b_12a8c0644c7f4e2eb977fa2ed954d422.pdf
    • https://static.usrfiles.com/ugd/7e0eb0_c85a6d589e1c44fdb40bf79424c0556a.pdf
    • https://static.usrfiles.com/ugd/87fdc7_a68a09c812d4499da0307a8804335b6c.pdf
    • https://static.usrfiles.com/ugd/b8c837_f3c26bda3a9f45ebb792a34ea9b5276b.pdf
    • https://static.usrfiles.com/ugd/9e53d4_daecc34954494a5eae30f21b594ba45a.pdf
    • https://cdn.shopify.com/s/files/1/0431/3592/6434/files/paxodekusivefedevixes.pdf
    • https://cdn.shopify.com/s/files/1/0433/6241/8846/files/fozeribotanabu.pdf
    • https://cdn.shopify.com/s/files/1/0436/9825/8088/files/rejorif.pdf
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/rusugixu.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_off000080a2.bin
2a93aa9dc488eff178d8c9aa644786d90c32abc5f3869885eab5efb47ab7039a
pdf-font-stream PDF embedded font (sfnt) at offset 0x80A2 4932 bytes
font_01_sfnt_off0000913d.bin
63127e0f5184ba9687fa2387a480c3b54b18e1065e09468298ade5b580962146
pdf-font-stream PDF embedded font (sfnt) at offset 0x913D 10268 bytes