Malicious PDF — malware analysis report

Static analysis result for SHA-256 f756d74d1ddf279c…

MALICIOUS

PDF

41.3 KB Created: 2020-08-05 10:01:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ba431ba12f3fa226b3dc27c068cdfd3 SHA-1: fa0f062260eeb31da33e0bc59fc939e63df20236 SHA-256: f756d74d1ddf279c836d1a9d809d77459cec6f3ed253773845e9849d9b29ced3
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.com. This URL is presented to the user as an 'Archer c20 manual pdf'. The document also contains a large number of embedded links, many of which point to Shopify domains, likely as part of an SEO link farm to improve search engine ranking for malicious content. 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=archer+c20+manual+pdf
    • http://files.livinginrogerspark.com/uploads/1/3/0/7/130740391/bebimovevugij.pdf
    • http://files.lindalgraham.com/uploads/1/3/1/4/131455283/7d86161771d526.pdf
    • http://files.struggleendureemerge.com/uploads/1/3/1/3/131397938/niwixanuxov.pdf
    • http://files.nadjamoore.com/uploads/1/3/2/6/132682936/6384495.pdf
    • http://files.cusoeprofessionaleducation.org/uploads/1/3/0/7/130775014/jofuzuboge-dewidipokixivup.pdf
    • https://cdn.shopify.com/s/files/1/0433/5396/4712/files/76477536007.pdf
    • https://cdn.shopify.com/s/files/1/0432/5310/4790/files/serirevekubunodisisap.pdf
    • https://cdn.shopify.com/s/files/1/0432/7846/7222/files/37256742394.pdf
    • https://cdn.shopify.com/s/files/1/0434/5636/4709/files/xoporiv.pdf
    • https://cdn.shopify.com/s/files/1/0435/6397/4805/files/92178752213.pdf
    • https://cdn.shopify.com/s/files/1/0430/7006/2754/files/36192759055.pdf
    • https://cdn.shopify.com/s/files/1/0438/9660/2779/files/skyrim_se_footprints.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nuruge.pdf
    • https://cdn.shopify.com/s/files/1/0438/5341/4565/files/allison_transmission_fault_codes.pdf
    • https://cdn.shopify.com/s/files/1/0432/0195/3952/files/13772398901.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_off000056b7.bin
c134c2ffc1e54408abaa5bff6f7e6efbb9f3b6b78328daac9c556e1c27e89be9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56B7 5124 bytes
font_01_sfnt_off000067f1.bin
c099dc7e4dda35904c9737904f2e8e6215c629e3511cdac02f37632c39e94824		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67F1 10160 bytes
font_02_sfnt_off00008a91.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A91 4324 bytes

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