Malicious PDF — malware analysis report

Static analysis result for SHA-256 e847af8782486903…

MALICIOUS

PDF

41.7 KB Created: 2020-08-25 10:43:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d314868145aaef995ab3eba8d90aba9b SHA-1: 2f04c0d9e9a72066e00f2f9b0a3ef9e759badbbb SHA-256: e847af8782486903988426499a82276dbf524b7e9304c357536f042997fd951c
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to host further malicious content or phishing pages. The document body text, though partially corrupted, contains the string 'Everstream movies apk' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous other links to Shopify-hosted PDFs, while many are benign, indicates a potential link farm or SEO poisoning technique to obscure the malicious destination.

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=everstream+movies+apk
    • http://nirufazib.marktobin.com/uploads/1/3/0/8/130814070/5565218.pdf
    • http://files.miam-foundation.org/uploads/1/3/1/8/131856815/13e1f0.pdf
    • http://xujep.babycarriersmalta.com/uploads/1/3/1/1/131163908/nilow_polibabalusod.pdf
    • http://lopuniw.deschutesriverlavender.com/uploads/1/3/2/6/132682989/ropetuwopodesarowif.pdf
    • https://cdn.shopify.com/s/files/1/0437/5920/6558/files/enzyme_biocatalysis.pdf
    • https://cdn.shopify.com/s/files/1/0429/9712/1178/files/78036593437.pdf
    • https://cdn.shopify.com/s/files/1/0433/2113/1161/files/95471460255.pdf
    • https://cdn.shopify.com/s/files/1/0438/0898/1152/files/besivi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8402/9845/files/american_flag_image_hd.pdf
    • https://cdn.shopify.com/s/files/1/0464/9435/1512/files/lusadot.pdf
    • https://cdn.shopify.com/s/files/1/0437/1152/9114/files/lotitaniwibawovumusilub.pdf
    • https://cdn.shopify.com/s/files/1/0429/0982/7231/files/quatrain_form_crossword.pdf
    • https://cdn.shopify.com/s/files/1/0437/8011/2535/files/dudelinumatujegawebasaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/3550/9415/files/lujonagebedojifi.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_off00005de1.bin
4c5a6d06ac330356ec672b546a9620cdf261755a71958ab68ef8044d6d3f267a
pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE1 5012 bytes
font_01_sfnt_off00006ee4.bin
382155089c63040390378c2b641d4cb56bb676b2576f372c64a9e7eb896fe9e0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EE4 13868 bytes