Malicious PDF — malware analysis report

Static analysis result for SHA-256 00b10d34811f144b…

MALICIOUS

PDF

118.7 KB Created: 2020-08-17 18:19:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 09de87a1118d02dba471796c4d7f3389 SHA-1: b5c17a0cc52392703c8869af902f9ce6e387add1 SHA-256: 00b10d34811f144b20221d5fdc9e928cb0ab136b89c183aa41a2a2d8265a2abb
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, appears to contain the URL and a plausible lure related to a 'Trafigura interim report 2019'. The presence of a link farm suggests an attempt to broaden the reach of the malicious content.

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.ru/pify?keyword=trafigura+interim+report+2019
    • http://lanez.tinafung.com/uploads/1/3/1/6/131607984/8973644.pdf
    • http://files.henrymaynardhistory.com/uploads/1/3/1/4/131438348/kerajaju-xatadevususox-totog-metevuzafevofop.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/6898/0377/files/apollo_munich_form.pdf
    • https://cdn.shopify.com/s/files/1/0432/6516/3422/files/20665132002.pdf
    • https://cdn.shopify.com/s/files/1/0432/8351/3494/files/34587532532.pdf
    • https://cdn.shopify.com/s/files/1/0432/8855/9782/files/ashrae_90._1_si.pdf
    • https://cdn.shopify.com/s/files/1/0430/4253/7629/files/1910414941.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lozafawofife.pdf
    • https://cdn.shopify.com/s/files/1/0433/3817/0523/files/total_abdominal_histerektomi.pdf
    • https://cdn.shopify.com/s/files/1/0441/1251/1128/files/adobe_full_installer.pdf
    • https://cdn.shopify.com/s/files/1/0430/0092/2261/files/67503216261.pdf
    • https://cdn.shopify.com/s/files/1/0435/1387/2548/files/81842141310.pdf
    • https://cdn.shopify.com/s/files/1/0439/4749/1486/files/college_calculus_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rinavupomun.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_off00019749.bin
3c4c6c467d23f4d35f33abcc523f7f7526084367a09b0e7e6dbdac8f9e502560
pdf-font-stream PDF embedded font (sfnt) at offset 0x19749 5444 bytes
font_01_sfnt_off0001a9bc.bin
eafba0d1cb616ae35cdbf38777f3c1efec60e5829a4502b84d926e672d9f84cc
pdf-font-stream PDF embedded font (sfnt) at offset 0x1A9BC 10560 bytes