Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab75d6f9e72cf4cf…

MALICIOUS

PDF

47.6 KB Created: 2020-07-09 09:32:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d799efa79628cf3041b77e4daae01912 SHA-1: 9a2d73bbae611ea4949e64d554340eb5efc6a300 SHA-256: ab75d6f9e72cf4cf91d03ef49117ebdb6ac5df310434ac4f57d391456388b7ca
128 Risk Score

Malware Insights

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

The PDF document contains numerous links, presented as a service manual, that redirect to malicious infrastructure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the primary redirector URL. The presence of a visual download button further supports a deceptive lure. No scripts were extracted from this sample.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/wb?keyword=2000%20jeep%20cherokee%20service%20manual
    • http://files.ewiechart.com/uploads/1/3/2/3/132302913/gomokiwu-dapewijutufose-jofumuvusu.pdf
    • http://files.aartstudio.ca/uploads/1/3/2/7/132740880/b1ef876.pdf
    • http://files.gabbyhayes.net/uploads/1/3/1/3/131398066/wored_nagelapo_kuvuge.pdf
    • http://files.freelancecat.com/uploads/1/3/1/3/131384599/zedim-weguruwapare-winuj.pdf
    • http://files.todayhousing.com/uploads/1/3/0/9/130969243/vanamogukalazak.pdf
    • http://files.alcuincollege.com/uploads/1/3/1/3/131384552/makifikepusewajilev.pdf
    • http://files.socialepistemologynetwork.com/uploads/1/3/0/7/130774990/fixakidawijabo_junixeporin_maxowaratuxob.pdf
    • http://files.zer0excuses.com/uploads/1/3/1/1/131163953/5156008.pdf
    • http://files.sillsnsope.com/uploads/1/3/0/8/130874265/86032ed8ab8.pdf
    • https://kejogunun.files.wordpress.com/2020/07/lupefirarorumajadu.pdf
    • https://solanimozo.files.wordpress.com/2020/07/55385752346.pdf
    • https://gabumanoru.files.wordpress.com/2020/06/37508516181.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuwuvedalolavotidexetugom.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53940500656.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2857609843.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zukukujumifuxutage.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/febipak.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sovir.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94662163826.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f8d.bin
d0268685ce78443ef8f47be5a4b35a6ecaf793c925ad15bd2bd2ff5a9944c71e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8D 3184 bytes
font_01_sfnt_off00007ae3.bin
37a0ebb2da1c93b91176610b0d672bcd4407b52aed315d22ce1a6e7357b05384
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE3 5356 bytes
font_02_sfnt_off00008ce0.bin
6d9691165a996ffdc209cecb657f915c3c8280b574e86cbde67c86264a40c823
pdf-font-stream PDF embedded font (sfnt) at offset 0x8CE0 10588 bytes