Malicious PDF — malware analysis report

Static analysis result for SHA-256 06cfd74ade5ca5da…

MALICIOUS

PDF

41.7 KB Created: 2020-08-14 22:54:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 16227a8820303c88f66c5d39b728d8e1 SHA-1: c5f2ca385f7748504ee6fb8fec176fe1badc5b3e SHA-256: 06cfd74ade5ca5da8e77aa7b26d9bd87c189548c8d51e1fc142b1e428bdc3459
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, includes the URL 'https://ttraff.com/pify?keyword=luang+prabang+food+guide', suggesting a phishing or scam attempt. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to obscure the malicious redirector.

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=luang+prabang+food+guide
    • http://gumew.meralomabikeclub.ca/uploads/1/3/1/3/131379362/6335251.pdf
    • http://files.myphoenixcare.com/uploads/1/3/2/6/132682528/8912139.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/9963/4326/files/tennessee_drivers_license_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/0908/0477/files/afrontamiento_del_estres_laboral.pdf
    • https://cdn.shopify.com/s/files/1/0437/2883/0625/files/american_english_file_5_test.pdf
    • https://cdn.shopify.com/s/files/1/0433/4285/6345/files/introductory_statistical_mechanics_bowley.pdf
    • https://cdn.shopify.com/s/files/1/0429/0406/0071/files/atoms_and_elements_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/4607/6565/files/pidenezigutiforuxe.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/nawifozarazesuwibugilome.pdf
    • https://cdn.shopify.com/s/files/1/0428/6644/2406/files/12830087353.pdf
    • https://cdn.shopify.com/s/files/1/0434/3712/9895/files/didosilovelelasezer.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/42228357160.pdf
    • https://cdn.shopify.com/s/files/1/0433/5815/9006/files/67777889807.pdf
    • https://cdn.shopify.com/s/files/1/0428/3544/3875/files/22226385106.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_off00006594.bin
03eb2d79ae6e258ef442c6818414df1d36d3485f7ad47596a28004b9fa73e941
pdf-font-stream PDF embedded font (sfnt) at offset 0x6594 5080 bytes
font_01_sfnt_off000076e4.bin
6529d9725364c290b49fd22d948bac0cfde04426000c4570dd987c14d4bb07d3
pdf-font-stream PDF embedded font (sfnt) at offset 0x76E4 10364 bytes