Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb2f1c3ab08b0658…

MALICIOUS

PDF

43.6 KB Created: 2020-08-20 14:15:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45660c718d345706fef529634dfac828 SHA-1: 17bf20ab1e2b06ba2d08ddeb76de3521a7f30b01 SHA-256: cb2f1c3ab08b065862cbc8966ea2217dc150b982dfa76c492a2d5a1803978d9a
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, disguised as a lure for a 'Barbie dreamhouse party apk'. The PDF also hosts a large number of external links, many of which point to Shopify, likely as part of a link farm to improve search engine ranking for malicious content. No scripts were extracted, but the primary attack vector appears to be social engineering via a malicious link.

Heuristics 3

  • 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.
  • 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=barbie+dreamhouse+party+apk
    • http://files.polarcenter-bg.com/uploads/1/3/0/9/130970004/c40b681752.pdf
    • http://nebopuke.leggingsandliterature.com/uploads/1/3/1/3/131398560/7009987.pdf
    • http://files.jeffreyprimeaux.com/uploads/1/3/0/7/130739043/5528905.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/86770052238.pdf
    • https://cdn.shopify.com/s/files/1/0434/6878/3782/files/79473381556.pdf
    • https://cdn.shopify.com/s/files/1/0428/9275/5103/files/61423816000.pdf
    • https://cdn.shopify.com/s/files/1/0438/3470/4034/files/lr_lightroom_apk_old_version.pdf
    • https://cdn.shopify.com/s/files/1/0430/3575/4650/files/57692368961.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5903401900.pdf
    • https://cdn.shopify.com/s/files/1/0440/8147/9832/files/ncert_class_11_chemistry_periodic_table.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2292/files/17226651835.pdf
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/25686822477.pdf
    • https://cdn.shopify.com/s/files/1/0431/6931/7020/files/96385134368.pdf
    • https://cdn.shopify.com/s/files/1/0433/7205/2643/files/what_function_does_the_appendix_perform.pdf
    • https://cdn.shopify.com/s/files/1/0431/4618/2822/files/minecraft_daytime_command.pdf
    • https://cdn.shopify.com/s/files/1/0431/7095/5424/files/74449015859.pdf
    • https://cdn.shopify.com/s/files/1/0430/3765/5193/files/xadelifikipudipelajupuvi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005be1.bin
e34c609393487bcbda3f8cdb30804fd0e495525c70129f9252b853e8c4264d18
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE1 5300 bytes
font_01_sfnt_off00006de3.bin
5a31fdaf6666897380cebe6f6e586368228de84f73adb2acf34de8361bfece41
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE3 10964 bytes
font_02_sfnt_off0000931b.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x931B 4324 bytes