Malicious PDF — malware analysis report

Static analysis result for SHA-256 2511764c7dbff84b…

MALICIOUS

PDF

41.3 KB Created: 2020-07-19 05:44:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e986474b1feec1fe36e15d41e1c18cd SHA-1: 4622b29a4ac7be309aa7826ca04c1505744123ee SHA-256: 2511764c7dbff84bd87a80be3115f56d738f92241ceca600463b77eda7cf9d52
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains heuristics indicating it is a malicious redirector and a link farm. The embedded content, though heavily obfuscated, appears to be related to a 'dometic fridge manual' lure. The primary malicious IOC is a URL that redirects to known malicious infrastructure, likely serving as a gateway to further compromise.

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.ru/wb?keyword=dometic%20fridge%20manual
    • http://files.cyspringstheatricalcompany.com/uploads/1/3/1/3/131380973/434001978ad.pdf
    • http://files.theflamestillburns.com/uploads/1/3/0/7/130739369/fupuravotimakukom.pdf
    • http://files.happytimedaycare.org/uploads/1/3/0/8/130814421/a7408e4c7b9f.pdf
    • http://files.athensprep.org/uploads/1/3/0/7/130776166/8122d0a.pdf
    • http://files.innerheartpathways.com/uploads/1/3/2/6/132681002/46e9335.pdf
    • http://files.simplifiedbybobbie.com/uploads/1/3/0/9/130969754/4078161.pdf
    • http://files.mrshutt.org/uploads/1/3/1/4/131436991/zitub.pdf
    • http://files.innerheartpathways.com/uploads/1
    • https://pisetilarop.files.wordpress.com/2020/07/46709193498.pdf
    • https://zemenabizide.files.wordpress.com/2020/07/69581980011.pdf
    • https://fisiguwinaf.files.wordpress.com/2020/06/9815335545.pdf
    • https://moluvezodox.files.wordpress.com/2020/07/wodalovasofafan.pdf
    • https://wuguzifopi.files.wordpress.com/2020/06/zegenizaxudidezijoworub.pdf
    • https://cdn.shopify.com/s/files/1/0434/3041/2450/files/weteke.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53446206952.pdf
    • https://cdn.shopify.com/s/files/1/0433/8617/5651/files/55883961667.pdf
    • https://cdn.shopify.com/s/files/1/0428/6231/3631/files/rosojudi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8514/3965/files/49632852412.pdf
    • https://cdn.shopify.com/s/files/1/0430/1471/7597/files/surotojovaminevukojunonap.pdf
    • https://cdn.shopify.com/s/files/1/0428/3033/2060/files/varukivotifajizug.pdf
    • https://cdn.shopify.com/s/files/1/0428/8099/1388/files/fojanevotaliwijewuvavot.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_off0000662b.bin
d5de514b249f8dc360d192f129c2b257f81aa0ddb5106d9adf2f0746a7365d38
pdf-font-stream PDF embedded font (sfnt) at offset 0x662B 5044 bytes
font_01_sfnt_off0000773b.bin
00f5c053c564cd69498764ce5d8163885eb9a26e8767d4b354d95a24ab771954
pdf-font-stream PDF embedded font (sfnt) at offset 0x773B 9548 bytes