Malicious PDF — malware analysis report

Static analysis result for SHA-256 0024d702b8062126…

MALICIOUS

PDF

41.4 KB Created: 2020-08-02 10:46:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75761cf4cc9fab11383978aeafbd0ae8 SHA-1: f37369b33bca22e7c782e74e3c07b6e0ea20ab62 SHA-256: 0024d702b8062126a3789b24a512208caff2f483daaf607ee1d8ac10fcb73e29
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains numerous embedded links, including one pointing to a known malicious redirector. The document body text and heuristics indicate a lure to download a file, likely a payload, disguised as a FedEx shipping manager. The presence of many external PDF links suggests an attempt to obscure the final 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.ru/pify?keyword=download+fedex+ship+manager
    • http://files.glendalekfss.com/uploads/1/3/1/3/131379951/jozepojulizitul_fifirupibe_dijarutosufato.pdf
    • http://files.sarahckart.com/uploads/1/3/1/4/131407194/balel-zosil-givovugoped-benewiv.pdf
    • http://files.new-england-marketing.com/uploads/1/3/1/1/131164016/6100581.pdf
    • http://files.tkotupperware.com/uploads/1/3/0/9/130970022/galapevafamisuxiri.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/2537/5125/files/fujawiser.pdf
    • https://cdn.shopify.com/s/files/1/0427/7701/8524/files/gotunema.pdf
    • https://cdn.shopify.com/s/files/1/0434/2359/6711/files/66568941949.pdf
    • https://cdn.shopify.com/s/files/1/0429/2739/0887/files/48146634659.pdf
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/75400887004.pdf
    • https://cdn.shopify.com/s/files/1/0431/5627/5362/files/guxefajafama.pdf
    • https://cdn.shopify.com/s/files/1/0436/4258/5241/files/nenefumumagapek.pdf
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/amc_lennox_town_center_24_columbus_oh.pdf
    • https://cdn.shopify.com/s/files/1/0431/5863/4658/files/nemiparuwuginotapu.pdf
    • https://cdn.shopify.com/s/files/1/0439/4539/4331/files/14817782929.pdf
    • https://cdn.shopify.com/s/files/1/0433/1801/8216/files/46699885245.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_off0000622d.bin
ff62aba53249eaae28c5de92460d96df53c949bae4bf601f2aafd224b7f7c4ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x622D 5616 bytes
font_01_sfnt_off0000753e.bin
6188324121bf1470c10c288441f322ee5531a83a1010cbb28077e39671fcec2d
pdf-font-stream PDF embedded font (sfnt) at offset 0x753E 10488 bytes