Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ab2bbd180f5d2b6…

MALICIOUS

PDF

45.3 KB Created: 2020-08-24 09:33:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fc9f7ac641e667953cc9948977720c77 SHA-1: 92c9282336c3c535862f318ecb37642f4dbd9c41 SHA-256: 2ab2bbd180f5d2b6b937ed0586c6bda6b2a7c2f569aa3b72c482d632ce8ce9bf
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.com/pify?keyword=latest+best+android+phones+under+12000, which is flagged as a malicious redirector. This suggests the document's primary purpose is to direct users to malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=latest+best+android+phones+under+12000
    • http://pizibape.rachaelfrankford.com/uploads/1/3/1/4/131437402/gukevaku.pdf
    • http://fizifowir.karlrauphotography.com/uploads/1/3/0/7/130776823/6225c.pdf
    • http://files.purplespirithealing.com/uploads/1/3/1/1/131164260/porijitorodibugiraf.pdf
    • https://cdn.shopify.com/s/files/1/0431/0512/4503/files/69904922578.pdf
    • https://cdn.shopify.com/s/files/1/0433/8581/5190/files/81089977741.pdf
    • https://cdn.shopify.com/s/files/1/0429/9145/2314/files/14766637453.pdf
    • https://cdn.shopify.com/s/files/1/0430/8205/5842/files/how_to_delete_branch_on_github.pdf
    • https://cdn.shopify.com/s/files/1/0432/7076/6750/files/vubox.pdf
    • https://cdn.shopify.com/s/files/1/0432/0791/7729/files/facebook_lite_for_windows_7.pdf
    • https://cdn.shopify.com/s/files/1/0436/1686/2371/files/17551705776.pdf
    • https://cdn.shopify.com/s/files/1/0432/7977/7945/files/jordan_curve_theorem.pdf
    • https://cdn.shopify.com/s/files/1/0461/9114/9207/files/42078968082.pdf
    • https://cdn.shopify.com/s/files/1/0433/6674/4214/files/fisanuv.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_off000071ef.bin
c0abc00ece3fc3ea444b6a4441d5d8c5a1778aa67422793b87df529a49afd440
pdf-font-stream PDF embedded font (sfnt) at offset 0x71EF 5424 bytes
font_01_sfnt_off0000844c.bin
3edc84219a63e11dc176c9ec071952cee5591954d924eb14ef19da0f37495d52
pdf-font-stream PDF embedded font (sfnt) at offset 0x844C 10564 bytes