Malicious PDF — malware analysis report

Static analysis result for SHA-256 d938050554464581…

MALICIOUS

PDF

42.6 KB Created: 2020-08-09 02:28:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c1516b921cba2256af6a61432838786 SHA-1: ab707a71df75262a351fac0839e878a18ba6f6b9 SHA-256: d9380505544645818ea4489a71fdb50ac20a588faa21c4c0e7f14417a8183aa2
120 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, many of which point to a redirector service. The document body text, though partially corrupted, suggests a lure related to 'important dates' to encourage clicks. The primary malicious IOC is the redirector URL, which likely leads to further malicious content. 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.ru/pify?keyword=important+dates+of+the+year+pdf+download
    • http://files.hilltoptelevision.com/uploads/1/3/0/7/130739996/jobej.pdf
    • http://files.nigeldonovan.com/uploads/1/3/0/8/130874575/175334.pdf
    • http://files.solarenergybrokerinc.com/uploads/1/3/1/4/131454090/sisoluzakoronux_vagasagerurud_mobuf_nulakuwuguw.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6845/files/41677996119.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/borutazaweluv.pdf
    • https://cdn.shopify.com/s/files/1/0436/3943/9510/files/70647340844.pdf
    • https://cdn.shopify.com/s/files/1/0429/2250/8454/files/57633084216.pdf
    • https://cdn.shopify.com/s/files/1/0428/2816/9383/files/la_crosse_clock_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/9531/6896/files/the_wanderer_anglo_saxon.pdf
    • https://cdn.shopify.com/s/files/1/0431/1410/2941/files/beeman_sportsman_rs2_series.pdf
    • https://cdn.shopify.com/s/files/1/0430/8919/9268/files/gajibazadaxilaren.pdf
    • https://cdn.shopify.com/s/files/1/0434/4945/0661/files/60297672094.pdf
    • https://cdn.shopify.com/s/files/1/0427/5381/8790/files/sunoparonutizu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2204/1767/files/degobixinusoja.pdf
    • https://cdn.shopify.com/s/files/1/0431/2691/5239/files/riwudulugonerepurokekid.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_off00005b8d.bin
e829ce3afd77534b27ae388b585ecb05427fc6f93bccfae585ad0b57c89f335a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B8D 5412 bytes
font_01_sfnt_off00006dde.bin
1c16f3735daf3596e778a7067822e257cbffc78e21090d62856a4458d6a14425		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DDE 9828 bytes
font_02_sfnt_off00008fb8.bin
ab0b30550c16f0218ea180a56450acc25083be48fb805cb0f6f475dfa13b8319		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FB8 2832 bytes

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