Malicious PDF — malware analysis report

Static analysis result for SHA-256 5364a4189a9557ed…

MALICIOUS

PDF

38.4 KB Created: 2020-08-14 13:47:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2745cb4458fadd1b875d8951b76f4611 SHA-1: c9f8733235a47d7956c5b022a81f4f4b555545b7 SHA-256: 5364a4189a9557edad4a7c32605d9f115104b8790815091681b5abd76055ca1b
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, and one critical link to a known malicious redirector at ttraff.ru. The document body, though partially corrupted, contains the text 'Mundra berthing report today' and the redirector URL, suggesting a lure to trick users into clicking malicious links. The ML classifier strongly indicates 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.ru/pify?keyword=mundra+berthing+report+today
    • http://files.iananthonycoleman.com/uploads/1/3/0/7/130776718/9342694.pdf
    • http://files.santiagonavarroartist.com/uploads/1/3/1/0/131071175/gezatuxabiva.pdf
    • http://jelove.counterpointstat.com/uploads/1/3/0/7/130776741/7473308.pdf
    • http://radowavo.insightcounsellingtoronto.com/uploads/1/3/2/3/132303195/dabow-zumufo-guvad.pdf
    • https://cdn.shopify.com/s/files/1/0436/0349/3026/files/lusarodegonerezu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1660/1249/files/kedefufifojatovolag.pdf
    • https://cdn.shopify.com/s/files/1/0441/1562/4088/files/free_printable_chevron_pattern_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/4456/8220/files/66807211546.pdf
    • https://cdn.shopify.com/s/files/1/0437/3600/6817/files/jesugasatukowav.pdf
    • https://cdn.shopify.com/s/files/1/0438/8998/3643/files/oblivion_cure_vampirism.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/bozazixaduxem.pdf
    • https://cdn.shopify.com/s/files/1/0439/9484/1246/files/50276475942.pdf
    • https://cdn.shopify.com/s/files/1/0430/5354/7677/files/8828234787.pdf
    • https://cdn.shopify.com/s/files/1/0452/6279/9005/files/affiliate_marketing_bangla.pdf
    • https://cdn.shopify.com/s/files/1/0437/6395/7909/files/flamenco_guitar_sheet_music.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005577.bin
bd481736e1d1d484fd3c8cbbd7e567aa11a333abd2d0eab25894cd291f2078d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x5577 5260 bytes
font_01_sfnt_off00006752.bin
4dfa040386de2f6e9756181eda579767f76bd50c7968faf76e766fbeaf424998
pdf-font-stream PDF embedded font (sfnt) at offset 0x6752 10800 bytes