Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2922babe75448a9…

MALICIOUS

PDF

44.1 KB Created: 2020-08-15 04:47:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2ccd66a1d0cd2ab7007799501fe74910 SHA-1: dd48a04d065ea4d4e4204f1d75c970e774ef3ca1 SHA-256: d2922babe75448a932490fcc0c4851b2aa82175c11695af7d2515dc5c9858192
152 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 of which point to Shopify domains, but one critical link redirects through ttraff.cc. This redirector is known to lead to malicious infrastructure. The document body text, though partially corrupted, suggests a lure related to technical specifications, likely to encourage clicking the malicious link. The ML classifier strongly supports the malicious verdict.

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/pify?keyword=sheet+metal+gauge+thickness+chart+in+mm
    • http://jazuxusuw.treehousehashomes.com/uploads/1/3/1/8/131871699/riziwun.pdf
    • http://satonu.bloomingarrow.com/uploads/1/3/0/9/130969045/latiretemalanu-zanel-bukuvikorinefo.pdf
    • https://cdn.shopify.com/s/files/1/0435/2793/0011/files/wuzawirikuto.pdf
    • https://cdn.shopify.com/s/files/1/0434/4584/6168/files/kibapotesanovidopeb.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3814/files/tenok.pdf
    • https://cdn.shopify.com/s/files/1/0429/6874/4087/files/xulotiwevozosabozibe.pdf
    • https://cdn.shopify.com/s/files/1/0434/5085/9670/files/learning_generative_adversarial_networks_next_generation_deep_learning_simplified.pdf
    • https://cdn.shopify.com/s/files/1/0427/7813/2636/files/72461125444.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27360052690.pdf
    • https://cdn.shopify.com/s/files/1/0429/1028/5983/files/directx_10_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/0508/2776/files/sotonubixologekurutu.pdf
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/78414755069.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/92356996981.pdf
    • https://cdn.shopify.com/s/files/1/0437/2040/9256/files/26027158670.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6982/files/4175227151.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_off000068a6.bin
d306bc657a07a0c2e2dd577bc26530998d3e26a0a359a43ece9da0db3e578af7
pdf-font-stream PDF embedded font (sfnt) at offset 0x68A6 5380 bytes
font_01_sfnt_off00007ac4.bin
0e512f57220443a3fd5c0e1ead039da6d1fb10f1d52219b6be3f4ba4eec4b452
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC4 12972 bytes