Malicious PDF — malware analysis report

Static analysis result for SHA-256 91d934bf5989e3e2…

MALICIOUS

PDF

49.8 KB Created: 2020-08-04 04:18:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65ece11857a93e7840172dd0133fb4fd SHA-1: 71a5b317777738d244513fe3bc4f5f6fc7657fd2 SHA-256: 91d934bf5989e3e2ed432b9c44fdb8469e5fb9ab4248236215fb50afc564308c
128 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector at 'https://ttraff.cc/pify?keyword=protected+areas+management+pdf'. Another critical heuristic identified a mass external PDF link farm hosted on cdn.shopify.com, suggesting an attempt to generate traffic or distribute content. The document body, though heavily obfuscated, contains the same URL, reinforcing the lure. The presence of urgency language further supports the phishing pretext.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=protected+areas+management+pdf
    • http://files.orlandokb1.com/uploads/1/3/2/6/132696330/gowakonujusor-rezek-wajukonu-miniwexuwe.pdf
    • http://files.cubiccompass.com/uploads/1/3/1/3/131383580/3ce23512fc7.pdf
    • http://files.therealequestrian.com/uploads/1/3/1/8/131857562/mezovafaneserafez.pdf
    • https://cdn.shopify.com/s/files/1/0433/3980/8922/files/zijezubowew.pdf
    • https://cdn.shopify.com/s/files/1/0429/3420/6631/files/xivusigej.pdf
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/48996501455.pdf
    • https://cdn.shopify.com/s/files/1/0430/1520/9123/files/python_standard_deviation.pdf
    • https://cdn.shopify.com/s/files/1/0433/0940/0214/files/3571047208.pdf
    • https://cdn.shopify.com/s/files/1/0430/3070/8375/files/83931864340.pdf
    • https://cdn.shopify.com/s/files/1/0431/6980/8550/files/paguzupurotobam.pdf
    • https://cdn.shopify.com/s/files/1/0435/4310/1591/files/kipugosipuvupetaxezivawo.pdf
    • https://cdn.shopify.com/s/files/1/0430/0655/8359/files/44120069321.pdf
    • https://cdn.shopify.com/s/files/1/0430/8670/8889/files/pewul.pdf
    • https://cdn.shopify.com/s/files/1/0438/5413/5456/files/pokemon_sapphire_rom_cheats.pdf
    • https://cdn.shopify.com/s/files/1/0432/1935/3767/files/conkers_bad_fur_day_rom.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_off00008378.bin
b4f41e93bdde885428a6322f29bb58cb83f57e83fdf753c9f62eb8d8898b84b6
pdf-font-stream PDF embedded font (sfnt) at offset 0x8378 5444 bytes
font_01_sfnt_off000095e8.bin
eda4b4cb79bf3208408317cab13671b4c241aded2faeebb9cedc483e54d767f8
pdf-font-stream PDF embedded font (sfnt) at offset 0x95E8 10804 bytes