Malicious PDF — malware analysis report

Static analysis result for SHA-256 932ad481c5a2a79b…

MALICIOUS

PDF

48.0 KB Created: 2020-08-15 07:28:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 410b188108bb161babe7132fb96a0499 SHA-1: eec868a41438cf9e38cebf3ebe73007ac0ab9a9f SHA-256: 932ad481c5a2a79bebee6cc1aeac23dada0d1f961dc0510c33e6a8362ca2e525
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Add-in T1059.001 PowerShell

The PDF contains numerous links, with one critical heuristic identifying a link to a known malicious redirector at `https://ttraff.ru/pify?keyword=bitmap+recycle+example+android`. Another heuristic indicates a link farm structure, suggesting an attempt to manipulate search engine results or distribute content. The document body is heavily obfuscated and contains embedded URLs, further supporting the redirection attack pattern. No scripts were extracted from this sample.

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.ru/pify?keyword=bitmap+recycle+example+android
    • http://files.diaryoffaith.com/uploads/1/3/2/7/132740463/0dee46649592.pdf
    • http://files.scienceroom302.com/uploads/1/3/0/7/130740049/e2734f8f.pdf
    • http://files.designingaccess.biz/uploads/1/3/0/7/130776673/5800518.pdf
    • http://pewaxawi.newyork-homeinspections.com/uploads/1/3/2/8/132814930/4614045.pdf
    • https://cdn.shopify.com/s/files/1/0434/2372/7783/files/gekevikejofa.pdf
    • https://cdn.shopify.com/s/files/1/0428/8934/7228/files/place_type_6_sort_14_maxresults_10.pdf
    • https://cdn.shopify.com/s/files/1/0431/4107/1016/files/training_bonafide_certificate_format.pdf
    • https://cdn.shopify.com/s/files/1/0430/1045/7753/files/fiziwaxawasave.pdf
    • https://cdn.shopify.com/s/files/1/0431/7839/3762/files/create_windows_bootable_usb.pdf
    • https://cdn.shopify.com/s/files/1/0440/7685/9544/files/naruto_shippuden_english_dubbed_episode_336.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sesolofulazige.pdf
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/17173553460.pdf
    • https://cdn.shopify.com/s/files/1/0436/4101/2377/files/cocoyam_production.pdf
    • https://cdn.shopify.com/s/files/1/0437/2591/4262/files/zaselulowupigezirilujejo.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_off00007c5a.bin
a0f973612595f6c0ee39582883af50fd18851c215d8f6c6c9ee88cc3d0eff33f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5A 5260 bytes
font_01_sfnt_off00008e23.bin
a1729b402d67b5fa8063bde624d7548610c2e6a961a08880408fbfb1e20756b9
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E23 11020 bytes