Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc35bec3e9596596…

MALICIOUS

PDF

44.2 KB Created: 2020-08-06 08:12:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d15dfc9defb705e6a2d4753ae677f41 SHA-1: 3f9031c9ff480dcaf06a044f4cf189a14fe23867 SHA-256: fc35bec3e9596596cfa97035cf04fbd81f5143789450b2350073db69d85e7883
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=golongan+bronkodilator+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though partially corrupted, contains text related to 'Golongan bronkodilator pdf', suggesting a lure to disguise the malicious redirection. The primary intent appears to be redirecting users to malicious infrastructure.

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=golongan+bronkodilator+pdf
    • http://files.pentepoets.com/uploads/1/3/0/7/130740364/wivolimivuza.pdf
    • http://files.jennifercronk.com/uploads/1/3/0/8/130813461/7555371.pdf
    • http://files.extremechallengepuertorico.com/uploads/1/3/1/6/131606186/sapeme.pdf
    • http://files.ccwinch.org.uk/uploads/1/3/0/7/130740207/7198660.pdf
    • https://cdn.shopify.com/s/files/1/0430/6200/1821/files/gudij.pdf
    • https://cdn.shopify.com/s/files/1/0431/6341/8784/files/git_set_tracking_branch.pdf
    • https://cdn.shopify.com/s/files/1/0431/4624/8358/files/71111976251.pdf
    • https://cdn.shopify.com/s/files/1/0431/6348/4315/files/nabapi.pdf
    • https://cdn.shopify.com/s/files/1/0429/0274/9347/files/bl_novel_english.pdf
    • https://cdn.shopify.com/s/files/1/0433/1775/6062/files/20490640320.pdf
    • https://cdn.shopify.com/s/files/1/0433/2158/9913/files/jizuzejuvijutef.pdf
    • https://cdn.shopify.com/s/files/1/0437/7142/9015/files/microbiology_laboratory_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0434/8005/5965/files/42424097307.pdf
    • https://cdn.shopify.com/s/files/1/0432/4953/3088/files/47912894916.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_off00006efe.bin
f2b413fc3eacb36921efdabef39a94654a6bfec809f9c9ad135642abaa16a819		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EFE 5264 bytes
font_01_sfnt_off000080f4.bin
928d33807a5334174960aa180f0ca450e692547a34f48ff60e652370eef00ae2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80F4 10236 bytes

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