Malicious PDF — malware analysis report

Static analysis result for SHA-256 eea13c280555ed9a…

MALICIOUS

PDF

36.3 KB Created: 2020-08-16 18:51:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 14e11fa65af3205aaa4de315a25b392d SHA-1: 57288389e802f7bf9c151070ccd15512405e7758 SHA-256: eea13c280555ed9afb97563109197bf57cf5b2dab2508a82bcb24bcac47733b2
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure, specifically 'ttraff.cc'. The document body, though heavily obfuscated, contains references to 'Green lantern logo wallpaper android' and the malicious URL, suggesting a lure to drive traffic to potentially malicious content. 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=green+lantern+logo+wallpaper+android
    • http://files.sewsweetdesigns.net/uploads/1/3/2/7/132712266/labelax-dusak-powosoruvamik-lumuxerutenufi.pdf
    • http://files.kresscinema.com/uploads/1/3/0/7/130775634/5a9e53164f1a94c.pdf
    • http://files.doggiestyles.net/uploads/1/3/2/6/132680907/razozidum-tijonoromobo-zukolunudonopug-ruvadom.pdf
    • http://begime.biglittlebrains.com/uploads/1/3/1/1/131164250/jogixa.pdf
    • http://files.fultonccgolf.com/uploads/1/3/0/9/130969740/zijadadasuvobo.pdf
    • https://cdn.shopify.com/s/files/1/0435/0427/1524/files/einthusan_hd_movies_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bebupikisanomagidilu.pdf
    • https://cdn.shopify.com/s/files/1/0435/7675/4344/files/gisiladowefodejagejawiben.pdf
    • https://cdn.shopify.com/s/files/1/0433/1444/6489/files/48928951639.pdf
    • https://cdn.shopify.com/s/files/1/0434/5570/9341/files/toligubuzogojime.pdf
    • https://cdn.shopify.com/s/files/1/0428/3986/7559/files/arterial_blood_gas_interpretation_a_case_study_approach.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/zexukonabasuwudasulolek.pdf
    • https://cdn.shopify.com/s/files/1/0429/6130/5756/files/panuperigizokinakajo.pdf
    • https://cdn.shopify.com/s/files/1/0435/2540/6874/files/gunovategunipuvu.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_off00005084.bin
e0a88563254f6ac549aca9b846ea3b0b6c7fc0d94fbeb8af1c7e8cb7c5532c91
pdf-font-stream PDF embedded font (sfnt) at offset 0x5084 5072 bytes
font_01_sfnt_off000061e4.bin
ecef833005a19270705b02d1e2c9491c52998c0f09c7f680f356f1a16dea3961
pdf-font-stream PDF embedded font (sfnt) at offset 0x61E4 9944 bytes