Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2fe4b73ca7b8873…

MALICIOUS

PDF

48.4 KB Created: 2020-07-19 18:42:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 03ba9f9e1bb2e456d14d38f9e6b8b8db SHA-1: 67433cbb41ba89c53042f4bd294debcb357b3f76 SHA-256: d2fe4b73ca7b88737c3c67ca2d9acd6a6013333bba564f32bdfbb4e7395d4f78
150 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, with one specifically identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body appears to be obfuscated or corrupted, but the presence of numerous external links suggests a link farm or phishing attempt designed to lead users to malicious sites.

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.cc/pify?keyword=call+of+duty+mobile+android+joystick
    • http://files.gapco.online/uploads/1/3/1/8/131857602/jowezapedenem_vaxujaze.pdf
    • http://files.lairginitiative.co.uk/uploads/1/3/0/7/130776483/7099228.pdf
    • http://files.kathrynfield.com/uploads/1/3/0/7/130738798/dacc6.pdf
    • http://files.wonderful-marocco.com/uploads/1/3/1/8/131856877/3776445.pdf
    • http://files.imarihardon.com/uploads/1/3/0/7/130775521/zejagabozuzixon.pdf
    • https://tofuwisaro.files.wordpress.com/2020/07/golukadetuwemutotalu.pdf
    • https://fikifuti.files.wordpress.com/2020/07/18171764571.pdf
    • https://gipetos.files.wordpress.com/2020/06/28784877743.pdf
    • https://xipobofukig.files.wordpress.com/2020/06/12370964150.pdf
    • https://gedudupirig.files.wordpress.com/2020/06/lorewadomagepib.pdf
    • https://digogaba.files.wordpress.com/2020/07/56229202600.pdf
    • https://jisaguxobaka.files.wordpress.com/2020/06/fezolajikunibubalugapej.pdf
    • https://jizebok503463804.files.wordpress.com/2020/07/judavavelugidufufurivalox.pdf
    • https://cdn.shopify.com/s/files/1/0431/2721/0144/files/31458836679.pdf
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/tepusinusedowirulinuwojug.pdf
    • https://cdn.shopify.com/s/files/1/0431/1983/7346/files/88949837951.pdf
    • https://cdn.shopify.com/s/files/1/0430/6278/8245/files/vemezibotutenisorozuguzol.pdf
    • https://cdn.shopify.com/s/files/1/0430/6305/0394/files/romafijijunozupajupawefar.pdf
    • https://cdn.shopify.com/s/files/1/0431/9775/9643/files/lovubiratuzanisuw.pdf
    • https://cdn.shopify.com/s/files/1/0437/8719/0430/files/82306528524.pdf
    • https://cdn.shopify.com/s/files/1/0429/5681/6540/files/42663435777.pdf
    • https://cdn.shopify.com/s/files/1/0431/5290/0260/files/82916352088.pdf
    • https://cdn.shopify.com/s/files/1/0431/7547/7407/files/31422997216.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_off00007ba4.bin
7b0f65f8aee75f942907f7dcf49f6fa614e198f67faecbcd3904f3a7c4d1dabc
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA4 5452 bytes
font_01_sfnt_off00008e2d.bin
65a94504637c131e5921334dc58d43cf4e12aa57ce374e30c4cba176814e3965
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E2D 10976 bytes