Malicious PDF — malware analysis report

Static analysis result for SHA-256 202ce0e9e8d2e482…

MALICIOUS

PDF

41.3 KB Created: 2020-08-10 12:10:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ecef459b066fb696e65de4627fa194d4 SHA-1: e3a95e2a92e010a4410eb1a7c703c17b1f15e6ef SHA-256: 202ce0e9e8d2e4827c0470a71fd33e8b6de0787d5286505a4beebc557790b134
130 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 external resources, suggesting a link farm or redirection strategy. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to 'Acrobat reader pdf writer free download' and a URL that appears to be a lure. This indicates a social engineering attempt to trick users into downloading potentially malicious files disguised as legitimate software.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=acrobat+reader+pdf+writer+free+download
    • http://files.hrstruehope.org/uploads/1/3/0/7/130739601/dipipebitoxu.pdf
    • http://files.resources.norledgemaths.com/uploads/1/3/2/7/132712483/zosoxabosalunok.pdf
    • http://sataxaw.ancientwavestudios.com/uploads/1/3/1/0/131070109/rifulawelegok-xagixaj-rabis-nanazu.pdf
    • http://files.commonwealth-cleaners.com/uploads/1/3/2/3/132303245/vuzisube_renojo.pdf
    • https://cdn.shopify.com/s/files/1/0428/7204/5734/files/mr_brightside_uke_chords.pdf
    • https://cdn.shopify.com/s/files/1/0432/4235/6904/files/81980300006.pdf
    • https://cdn.shopify.com/s/files/1/0433/5455/4533/files/sujutujenekisineral.pdf
    • https://cdn.shopify.com/s/files/1/0433/3764/6245/files/64694342935.pdf
    • https://cdn.shopify.com/s/files/1/0432/1522/4996/files/rakoje.pdf
    • https://cdn.shopify.com/s/files/1/0431/1659/3312/files/21325980094.pdf
    • https://cdn.shopify.com/s/files/1/0434/9421/1750/files/fafubolujogamoxuweka.pdf
    • https://cdn.shopify.com/s/files/1/0433/9679/2471/files/25461837696.pdf
    • https://cdn.shopify.com/s/files/1/0434/1848/4888/files/vowels_and_consonants_list.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nulexukiwogefera.pdf
    • https://cdn.shopify.com/s/files/1/0433/7215/0947/files/dummit_and_foote_abstract_algebra_solutions.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_off00005e4a.bin
e0a7d0676ca944a726e50fb31d022cdc01b06b3c4757d260eed6a5795dd2db85
pdf-font-stream PDF embedded font (sfnt) at offset 0x5E4A 5192 bytes
font_01_sfnt_off00007016.bin
ebfcdc2a0ad69333f75827a92c3ac697a0f48bc56e02be1c6b051cf88c1fd9b0
pdf-font-stream PDF embedded font (sfnt) at offset 0x7016 14028 bytes