Malicious PDF — malware analysis report

Static analysis result for SHA-256 260cdb48b7a615b0…

MALICIOUS

PDF

43.6 KB Created: 2020-08-27 16:30:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9ac81168dc52b3489e18f03635f02425 SHA-1: 415d8544b7775ca8e484bbc78289a4567a0ac6de SHA-256: 260cdb48b7a615b0215e7fe02fe80345ce4c124aaa9295876e088ecce1dc44de
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as an owner's manual, which is a common lure for phishing or malware delivery. The heuristic firings confirm the presence of a malicious redirector and a link farm, indicating an attempt to drive traffic to malicious sites. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the document body and heuristics clearly indicate a malicious redirection attempt.

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.link/pify?keyword=2009+honda+accord+owners+manual
    • http://files.beingbusiness.co.uk/uploads/1/3/0/8/130874429/863bbf1da7.pdf
    • http://files.beckpayne.com/uploads/1/3/1/3/131383651/3042986.pdf
    • http://bogun.rochecenter.org/uploads/1/3/1/3/131398455/xibipabuxeto_pudepidevuwa_siropozodevir.pdf
    • http://files.wallydavidsonphotography.com/uploads/1/3/1/3/131398102/zakozarukikumugem.pdf
    • http://wewid.visitwhc.org/uploads/1/3/2/7/132740478/pafimaba.pdf
    • https://cdn.shopify.com/s/files/1/0436/8865/7051/files/quill_the_life_of_a_guide_dog_full_movie_english.pdf
    • https://cdn.shopify.com/s/files/1/0437/9102/4280/files/leave_me_alone_pics.pdf
    • https://cdn.shopify.com/s/files/1/0436/1653/4685/files/57272432132.pdf
    • https://cdn.shopify.com/s/files/1/0450/2949/0838/files/accounting_equation_formula.pdf
    • https://cdn.shopify.com/s/files/1/0434/2353/1158/files/anarchist_cookbook_2016.pdf
    • https://cdn.shopify.com/s/files/1/0431/5951/9387/files/53238932204.pdf
    • https://cdn.shopify.com/s/files/1/0459/1874/8823/files/zatugozedokugevova.pdf
    • https://cdn.shopify.com/s/files/1/0433/5498/0505/files/dobenupibuwafizabopenil.pdf
    • https://cdn.shopify.com/s/files/1/0439/3431/8760/files/supetogoxafawokejirak.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_off00006a7a.bin
b04af189a59772b9ce4100ff34da4e5726a844b1c8a56f1ed8466a3c6af2f6e6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A7A 5604 bytes
font_01_sfnt_off00007d5d.bin
b981d51ecb65639ed0b4526712164353aaafdc4db651ae0348c1d3b4111cad23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D5D 10728 bytes

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