Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4c3729b6cf412e5…

MALICIOUS

PDF

80.8 KB Created: 2020-08-21 10:59:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0bd1d57d7b8a40595b87cb99722aed37 SHA-1: ae10cbbd08ef74503855ea1f3d4900c1e6aa24b6 SHA-256: e4c3729b6cf412e58212c04896dfbd3e09b99e22d02074715e6f47dcac0e0a55
140 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains, and one critical link to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for 'Diablo 2 merc guide'. The presence of a callback phishing lure heuristic further supports the scam-like nature of this document. The primary attack pattern involves tricking the user into clicking a malicious link, which then likely leads to a phishing page or further malware download.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.com/pify?keyword=diablo+2+merc+guide+1.+13
    • http://lemizufon.celestejohnsonlpc.com/uploads/1/3/0/9/130969264/79f2606c.pdf
    • http://xupisem.cuisinierequipment.com/uploads/1/3/1/6/131607600/zasitodi.pdf
    • http://nezope.takeyourchancetravel.com/uploads/1/3/1/6/131637240/889859.pdf
    • http://files.bestkidsmentoring.org/uploads/1/3/1/6/131637841/3627584.pdf
    • https://cdn.shopify.com/s/files/1/0430/5174/5442/files/vexofidobeporenafaseporo.pdf
    • https://cdn.shopify.com/s/files/1/0435/7960/5147/files/astrophysics_for_someone_in_a_hurry.pdf
    • https://cdn.shopify.com/s/files/1/0431/4116/9309/files/sasejadigopavapadite.pdf
    • https://cdn.shopify.com/s/files/1/0432/4042/3592/files/unlimited_keys_and_coins_for_subway_surfers.pdf
    • https://cdn.shopify.com/s/files/1/0436/3599/8880/files/77260636141.pdf
    • https://cdn.shopify.com/s/files/1/0435/7606/6207/files/42641559240.pdf
    • https://cdn.shopify.com/s/files/1/0436/1856/6306/files/ligukabaza.pdf
    • https://cdn.shopify.com/s/files/1/0429/6343/5679/files/dafujakofezovalul.pdf
    • https://cdn.shopify.com/s/files/1/0449/1021/5323/files/jadual_caruman_kwsp_8_peratus.pdf
    • https://cdn.shopify.com/s/files/1/0432/2417/0664/files/tafib.pdf
    • https://cdn.shopify.com/s/files/1/0431/5794/6522/files/dreamweaver_cs3_portable_kuyhaa.pdf
    • https://cdn.shopify.com/s/files/1/0438/9804/4568/files/68720485983.pdf
    • https://cdn.shopify.com/s/files/1/0437/3151/7605/files/11085760692.pdf
    • https://cdn.shopify.com/s/files/1/0437/1175/8504/files/jovukajugarufikizipunori.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_off0000ff75.bin
0098ce7157314cff4d55368fda1710e6d6490ecf05dba340e2c047659defac22
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF75 5600 bytes
font_01_sfnt_off00011268.bin
97dbee2fb2ef864f6ca3c82ff5731eb9d74d00748b2f64ddf22f899948c0ba58
pdf-font-stream PDF embedded font (sfnt) at offset 0x11268 10360 bytes