Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ec3c099d4a11237…

MALICIOUS

PDF

36.3 KB Created: 2020-08-06 06:04:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: df826a4506619823afd95806eec7af3e SHA-1: 852641e83bd7d1e1ae298d2b3c9a1b40503be3e3 SHA-256: 7ec3c099d4a1123744fdd3e7bad8d48cab06f967d47cf50b834ac8d493912b69
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a malicious redirector link disguised as a 'road map pdf download' lure. The link points to ttraff.com, which is known malicious infrastructure. The document also contains a large number of embedded links, many pointing to Shopify domains, likely as part of an SEO link farm to improve search engine ranking for malicious content. No scripts were extracted, but the primary attack vector is social engineering via a deceptive link.

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.com/pify?keyword=chhattisgarh+road+map+pdf+download
    • http://files.cloudcity.site/uploads/1/3/0/9/130969522/ef7ddef3e4f8.pdf
    • http://files.travelinkaren.com/uploads/1/3/2/7/132712116/xipaxononajaxi.pdf
    • http://files.countryroadsanimalrescue.com/uploads/1/3/1/3/131398367/20b81e4924ca0b.pdf
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/bekebuliwe.pdf
    • https://cdn.shopify.com/s/files/1/0433/5812/6245/files/acrobat_writer_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/5937/2439/files/balutajogukiwadazuwipa.pdf
    • https://cdn.shopify.com/s/files/1/0430/5967/5290/files/15451734895.pdf
    • https://cdn.shopify.com/s/files/1/0430/5901/9927/files/priscilla_shirer_gideon.pdf
    • https://cdn.shopify.com/s/files/1/0431/5539/0630/files/serod.pdf
    • https://cdn.shopify.com/s/files/1/0429/1795/3702/files/waltz_in_a_minor_chopin_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/google_sheets_if_cell_is_not_empty.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/talijofazejodo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9443/4202/files/zidanukudenukivadop.pdf
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/98181532423.pdf
    • https://cdn.shopify.com/s/files/1/0438/5082/5893/files/puella_magi_madoka_magica_rebellion.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_off00004e7c.bin
73d482a39731ee945dfdd82f41b59b3a0aebe9efba478a62eb551b4802f36727
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E7C 5452 bytes
font_01_sfnt_off000060e5.bin
3676bb502b3d980de52b88e1d06cf05f5d7217f56bf1f20d819207068068170f
pdf-font-stream PDF embedded font (sfnt) at offset 0x60E5 10284 bytes