Malicious PDF — malware analysis report

Static analysis result for SHA-256 f26b3ab50abeb2a7…

MALICIOUS

PDF

44.6 KB Created: 2020-08-06 02:03:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: abbe810b39bb4accdc5d05e07ecf2419 SHA-1: bc57fec820040cdd0fe481d16b98ed1347913381 SHA-256: f26b3ab50abeb2a7d9fbc19a95fb74628783ae058ac993c1650d2b75e52a3048
150 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many pointing to Shopify domains hosting PDF files, suggesting a link farm for SEO poisoning. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is used to lure victims with a fake 'bartending for dummies pdf' download. This redirector likely leads to a malicious payload or phishing page. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=bartending+for+dummies+pdf
    • http://files.stashasasylum.com/uploads/1/3/1/0/131070483/7400984.pdf
    • http://files.coastalsilviculturecommittee.com/uploads/1/3/1/3/131380641/62d0f180.pdf
    • http://files.torontobelts.com/uploads/1/3/2/6/132696171/furedasoxiferaj_xuwoli_pelapog.pdf
    • http://files.southtownscatholic.org/uploads/1/3/1/6/131636990/3996155.pdf
    • https://cdn.shopify.com/s/files/1/0430/1606/1091/files/rokisawavilivusikiz.pdf
    • https://cdn.shopify.com/s/files/1/0431/5312/9640/files/zazamut.pdf
    • https://cdn.shopify.com/s/files/1/0427/4411/9462/files/89811859003.pdf
    • https://cdn.shopify.com/s/files/1/0436/7125/7241/files/gipomigepogogorexuja.pdf
    • https://cdn.shopify.com/s/files/1/0441/1208/5144/files/zokezuradolegisasomilu.pdf
    • https://cdn.shopify.com/s/files/1/0436/0775/2861/files/jujijevajotipajojetut.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/rotoxurexu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7605/8274/files/23185203068.pdf
    • https://cdn.shopify.com/s/files/1/0431/3192/8730/files/97276740650.pdf
    • https://cdn.shopify.com/s/files/1/0431/3533/6605/files/58413098491.pdf
    • https://cdn.shopify.com/s/files/1/0427/8566/9279/files/jesekokokuniwobaripigeji.pdf
    • https://cdn.shopify.com/s/files/1/0430/7949/9940/files/pofamarigonanomilelutuxi.pdf
    • https://cdn.shopify.com/s/files/1/0434/5613/5334/files/marathi_numbers_in_words_from_1_to_1000.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_off00006ffe.bin
a2bc54d4096a3855205f6454c2eef59ed667124435f88d9f995bff0d81d8a8a2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6FFE 5380 bytes
font_01_sfnt_off0000823c.bin
b74685614c35da954a32a9b42e3bbaf286288b24123d4be96e2ac36975d64a73
pdf-font-stream PDF embedded font (sfnt) at offset 0x823C 10368 bytes