Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3bf515fce66dd1d…

MALICIOUS

PDF

44.1 KB Created: 2020-08-19 21:52:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8da4d17774e736d370cbc0bf4be5167a SHA-1: 9c6328b3fac78369dce45a900e2c16330663ddfa SHA-256: f3bf515fce66dd1dc1473ab751f0f576fa63801e9411c534b036196d7f6e0ec2
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which are hosted on Shopify and appear to be SEO-optimized PDFs. One critical heuristic firing indicates a direct link to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains the same redirector URL, suggesting the primary intent is to lure the user to this malicious site. 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.com/pify?keyword=free+commendation+certificate+template
    • http://files.terencekuch.net/uploads/1/3/1/3/131383510/vexoremuvu.pdf
    • http://nojasuse.perfectskinllc.com/uploads/1/3/1/4/131454859/1552031.pdf
    • http://boton.baijingbox.com/uploads/1/3/1/4/131453267/d5fd1c730e.pdf
    • http://files.bbbhoneyfarm.com/uploads/1/3/1/4/131453177/nuzazimesarugot-jisiwumemo-xukajawoputorod.pdf
    • https://cdn.shopify.com/s/files/1/0440/5490/4997/files/14378062029.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6301/files/tizorojarajibutevu.pdf
    • https://cdn.shopify.com/s/files/1/0440/8888/5413/files/35706280353.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/hernando_county_school_calendar.pdf
    • https://cdn.shopify.com/s/files/1/0435/5555/3443/files/31469585425.pdf
    • https://cdn.shopify.com/s/files/1/0432/2174/5822/files/internal_covariate_shift.pdf
    • https://cdn.shopify.com/s/files/1/0433/3302/5960/files/conservation_of_mass_lab_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0427/9028/9574/files/switzerland_tourism.pdf
    • https://cdn.shopify.com/s/files/1/0436/4166/7734/files/christopher_columbus_journal.pdf
    • https://cdn.shopify.com/s/files/1/0434/1324/2005/files/89102944982.pdf
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/brian_tracy_quotes.pdf
    • https://cdn.shopify.com/s/files/1/0440/5755/9190/files/voting_literacy_test.pdf
    • https://cdn.shopify.com/s/files/1/0433/1572/4456/files/hide_soft_keyboard_android_autocompletetextview.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_off000063f8.bin
39f06ce6e249caaf58bd9230f6363933adcbda0977cbbbbb28ddb9d1768022d3
pdf-font-stream PDF embedded font (sfnt) at offset 0x63F8 4868 bytes
font_01_sfnt_off0000745c.bin
fd4d05c498b85ee3515394691121dc1bee31d8d417d916212b21a5c9b74234a2
pdf-font-stream PDF embedded font (sfnt) at offset 0x745C 9620 bytes
font_02_sfnt_off0000953b.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x953B 4324 bytes