Malicious PDF — malware analysis report

Static analysis result for SHA-256 082c114af37bbe2d…

MALICIOUS

PDF

41.1 KB Created: 2020-08-12 21:45:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a58e2e9881a47cac8b447a25e761aca7 SHA-1: 637fb7e32d6e26645cd8d7670161f7755941c6fc SHA-256: 082c114af37bbe2dcbde7968b1bdeddc12da819cfc1197b44b1059c846f43a7b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service. This indicates a link farm or SEO poisoning attack designed to lure users to malicious content. The primary malicious URL identified is ttraff.cc, which is known to host redirectors.

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=mastering+beaglebone+robotics+pdf
    • http://files.dyworkney.co.uk/uploads/1/3/2/7/132741486/772cc09d0c13c85.pdf
    • http://files.detourla.com/uploads/1/3/1/4/131438501/0c182dcff8527d.pdf
    • http://files.sheimdal.com/uploads/1/3/1/4/131453022/zusogusipinazum_tapufanogune_fojus.pdf
    • http://files.taradorey.com/uploads/1/3/0/8/130813055/wapoba_zulag_nususuzizusixa.pdf
    • http://files.genefambrough.com/uploads/1/3/1/4/131438405/tozutawufixi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/5567/6583/files/21_pilots_stressed_out_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0431/2812/7637/files/77882472973.pdf
    • https://cdn.shopify.com/s/files/1/0430/0200/3619/files/wagejesiv.pdf
    • https://cdn.shopify.com/s/files/1/0427/9857/9879/files/castration_in_animals.pdf
    • https://cdn.shopify.com/s/files/1/0427/9736/7452/files/9413088855.pdf
    • https://cdn.shopify.com/s/files/1/0439/2045/7883/files/jusopumagexove.pdf
    • https://cdn.shopify.com/s/files/1/0429/5835/6639/files/33636922058.pdf
    • https://cdn.shopify.com/s/files/1/0432/0047/9391/files/3._4_cambio_climtico_global_causas_y_consecuencias.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/60527157158.pdf
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/87360961298.pdf
    • https://cdn.shopify.com/s/files/1/0435/6803/8049/files/budetaxaraxonogodaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32177526878.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_off000061e4.bin
562eaf0c081a8f47b5290fe853111742406aa62f3ddd9a9a6c55c36d74f44ab5
pdf-font-stream PDF embedded font (sfnt) at offset 0x61E4 5468 bytes
font_01_sfnt_off00007482.bin
a93ad6e2ff8d812ceb8f04c27215c48e1f32bb2b736d8cc4e6c140e737026d00
pdf-font-stream PDF embedded font (sfnt) at offset 0x7482 10244 bytes