Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd6087adaad94510…

MALICIOUS

PDF

47.0 KB Created: 2020-08-11 16:23:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7191debc858a0a928f9e44c9b5cd5cf1 SHA-1: f6aa5a1ecd8f9c287020b0a6a20d2e03d6a215f1 SHA-256: cd6087adaad94510b6522b2cc008d62638817345cae0f4b29e4a6a81f78712df
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL and appears to be a lure related to hypertension symptoms. The presence of numerous external links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious URL. 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=signos+y+sintomas+de+la+hipertension+arterial+pdf
    • http://files.reading2reading.com/uploads/1/3/0/9/130969555/49253ecafb.pdf
    • http://wubis.steam-skills.org/uploads/1/3/0/8/130874284/fobewepage-memopipezixol-dabogidonolo-gulasumifek.pdf
    • http://files.i2cafe.com/uploads/1/3/0/8/130874201/dunirijiru.pdf
    • http://files.connorincalifornia.com/uploads/1/3/0/8/130814706/laxuti.pdf
    • https://cdn.shopify.com/s/files/1/0433/0569/7440/files/xunuxesiwofose.pdf
    • https://cdn.shopify.com/s/files/1/0434/2136/8482/files/86431244565.pdf
    • https://cdn.shopify.com/s/files/1/0431/4241/4487/files/6th_grade_math_workbook_mcgraw_hill.pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4267/files/public_administration_css_paper_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/6536/0034/files/73940570183.pdf
    • https://cdn.shopify.com/s/files/1/0440/5762/4726/files/basic_calculus_grade_11_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0432/9648/9632/files/27191312931.pdf
    • https://cdn.shopify.com/s/files/1/0429/7555/9829/files/pin_for_wiimote.pdf
    • https://cdn.shopify.com/s/files/1/0437/5071/9642/files/tusazojezedur.pdf
    • https://cdn.shopify.com/s/files/1/0429/7247/9647/files/93446318102.pdf
    • https://cdn.shopify.com/s/files/1/0434/8870/6717/files/edexcel_a_level_maths_textbooks.pdf
    • https://cdn.shopify.com/s/files/1/0428/3075/8044/files/25988775859.pdf
    • https://cdn.shopify.com/s/files/1/0434/5469/3537/files/31062443558.pdf
    • https://cdn.shopify.com/s/files/1/0434/6681/7702/files/algorithms_sartaj_sahni.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_off0000731a.bin
6245bef77a3ed3f6009e831f6a5bbfe8c65fc1fda528ed6b10fc341e6c397d6a
pdf-font-stream PDF embedded font (sfnt) at offset 0x731A 5660 bytes
font_01_sfnt_off00008628.bin
36a0c7053cf577390fe71def162750232f445bea13f00650ee0658d0f254a08d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8628 11892 bytes