Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0b8affabc975928…

MALICIOUS

PDF

40.6 KB Created: 2020-08-17 02:09:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67932091a8b9628cef7fcb87e7048a5a SHA-1: a5f9aef0b6a13846ac23f0dca5f158c5bf7c2af9 SHA-256: c0b8affabc97592885badd8e48b65296331fd3aca814a88223ada6a97f1dd80e
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.ru. This suggests a link farm or SEO poisoning tactic to lure victims. The document body, though heavily obfuscated, contains the same URL, reinforcing its role as a lure. The primary intent appears to be redirecting users to malicious infrastructure.

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=doing+dialectical+behavior+therapy+pdf
    • http://files.lovisbeautylounge.com/uploads/1/3/0/7/130738846/mezuwazi.pdf
    • http://files.terencejiam.com/uploads/1/3/1/6/131606201/movukinasefepemiruj.pdf
    • http://powek.refvol.org/uploads/1/3/0/7/130775918/puvelipogone.pdf
    • https://cdn.shopify.com/s/files/1/0449/1198/4795/files/bible_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6874/2040/files/28488806921.pdf
    • https://cdn.shopify.com/s/files/1/0430/7730/4484/files/58745998345.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/10542261424.pdf
    • https://cdn.shopify.com/s/files/1/0434/9627/6128/files/bawibuduni.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/thyroid_diet_chart.pdf
    • https://cdn.shopify.com/s/files/1/0431/2160/6820/files/zobovirasasekijo.pdf
    • https://cdn.shopify.com/s/files/1/0433/5442/3445/files/bavizez.pdf
    • https://cdn.shopify.com/s/files/1/0433/8168/6423/files/4273443398.pdf
    • https://cdn.shopify.com/s/files/1/0429/8909/3018/files/taguzelawemosewosobigiti.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_off000060c9.bin
e87b67bc6d531aa67d410b60bd8da419f3dfefb2cfff05afa244eda9cec76397		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60C9 5540 bytes
font_01_sfnt_off000073a3.bin
d913ed25345ae28bc181efffa9a07379b6ea045c6d094087d4e9b6b93c2bba09		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73A3 9948 bytes

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