Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bf0d5161011d0f7…

MALICIOUS

PDF

57.4 KB Created: 2020-08-08 02:51:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77aa2be790c0e5fb8203a8e03d7c8af9 SHA-1: c2a8659fa3e6367f4c2bdc7f08053608c3064559 SHA-256: 9bf0d5161011d0f751cf4df3315e728a0b79c8e67304a313b99a0d96704e4b4d
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, includes text related to 'effects of smoking and drinking alcohol pdf' and a URL that appears to be part of a link farm designed to attract traffic. The primary malicious URL identified is https://ttraff.cc/pify?keyword=effects+of+smoking+and+drinking+alcohol+pdf, which likely serves as a gateway to further malicious content. The presence of numerous Shopify-hosted PDF links suggests an attempt to disguise malicious activity within a seemingly legitimate context.

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.cc/pify?keyword=effects+of+smoking+and+drinking+alcohol+pdf
    • http://vuxavawas.bungareehistorywalk.com/uploads/1/3/1/6/131606490/kudobitugul-venonak-rufenujipoj.pdf
    • http://files.tinazhang.com/uploads/1/3/0/7/130738562/7296960.pdf
    • http://files.broadwaystreetwear.com/uploads/1/3/0/8/130814055/notodiwirosemutimim.pdf
    • https://cdn.shopify.com/s/files/1/0429/5622/6716/files/texas_nursing_jurisprudence_exam_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/8714/2818/files/gometuwuje.pdf
    • https://cdn.shopify.com/s/files/1/0431/3825/2954/files/keleganojewapoxaxuwanip.pdf
    • https://cdn.shopify.com/s/files/1/0429/2352/4259/files/el_neoliberalismo_en_america_latina.pdf
    • https://cdn.shopify.com/s/files/1/0435/6459/7397/files/makano_dejame_entar.pdf
    • https://cdn.shopify.com/s/files/1/0435/1849/2824/files/mununuzowolagebap.pdf
    • https://cdn.shopify.com/s/files/1/0428/5572/7260/files/60568702375.pdf
    • https://cdn.shopify.com/s/files/1/0432/4163/5997/files/rabupulovufixefabewiri.pdf
    • https://cdn.shopify.com/s/files/1/0432/9711/2219/files/agatha_christie_the_a._b._c._murders.pdf
    • https://cdn.shopify.com/s/files/1/0434/3080/5669/files/55841316841.pdf
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/npr_and_ncr.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_off0000a292.bin
e3fabdbb30f1008711269cb45b9966d548ccbcaee3221c2528f1f4b1d23b243e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA292 5592 bytes
font_01_sfnt_off0000b575.bin
d92528f8682c230bd1c3531265b0037c64976081a40970327a31dfcea7df973a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB575 10392 bytes

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