Malicious PDF — malware analysis report

Static analysis result for SHA-256 019d32bafaabc9c0…

MALICIOUS

PDF

49.9 KB Created: 2020-08-20 11:56:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d532c92a10e30026e7d43b6da278309 SHA-1: e89ae6345851ceb8e186e16235b91ad249ff6a09 SHA-256: 019d32bafaabc9c0dcca995d130fc84627e6a66f7f2b71e4eaf5b40ded384d24
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for linking to known malicious redirector infrastructure, specifically 'ttraff.cc'. It also exhibits a PDF link farm heuristic, pointing to numerous other PDF files hosted on Shopify. The document body, though partially corrupted, contains the URL that triggered the redirector heuristic, suggesting a lure to a malicious site disguised as a report. No scripts were extracted from this sample.

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=euler+hermes+country+report+indonesia
    • http://dozudadi.pinoyny.com/uploads/1/3/1/4/131482962/zored.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/6396/5861/files/32982971199.pdf
    • https://cdn.shopify.com/s/files/1/0433/8073/6156/files/xibubovodimuvalakenefulik.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/self_help_group_bylaws.pdf
    • https://cdn.shopify.com/s/files/1/0440/4235/4853/files/automation_anywhere_client.pdf
    • https://cdn.shopify.com/s/files/1/0440/8619/8424/files/pukonefirexasomawed.pdf
    • https://cdn.shopify.com/s/files/1/0435/6472/8483/files/44249812399.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1028728638.pdf
    • https://cdn.shopify.com/s/files/1/0431/8124/4577/files/obsessive_compulsive_personality_disorder.pdf
    • https://cdn.shopify.com/s/files/1/0438/1271/6704/files/white_blank_page_piano.pdf
    • https://cdn.shopify.com/s/files/1/0436/8665/8213/files/equilid_50mg.pdf
    • https://cdn.shopify.com/s/files/1/0429/0379/7916/files/javascript_random_string_generator.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/wudibuzojugavuzi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006848.bin
fbad6560e7829310f7369219dcdade663cdc7af3f2cf28a54f2c3346bd511a71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6848 8372 bytes
font_01_sfnt_off000084c3.bin
5643af19f6ad93d0e0e1af237f4d8f3a95d8d43571edae2bc9b78ebfc9041305		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84C3 5372 bytes
font_02_sfnt_off000096e9.bin
e4a950208ab6e93a3cedff9df58f5700f40c4987ec6c7db594bbdeef2225f00d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96E9 10424 bytes

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