Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b8ae3758d91af01…

MALICIOUS

PDF

33.9 KB Created: 2020-08-06 15:10:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91c8c20782f2aaf247bb5c8666b85caa SHA-1: 954ddf89ca2fc8ebf2a8ad4afabf42226216cfcc SHA-256: 9b8ae3758d91af01528c08d2d4c059f137f44423ac8c83d75a1b4bbdb535d2f9
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains, likely as a SEO lure. One critical heuristic identified a link to a known malicious redirector at ttraff.com, which is used to disguise the ultimate destination. The document body contains the URL that triggered the malicious redirector heuristic, suggesting the primary intent is to drive traffic to this malicious site.

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.com/pify?keyword=ma+urdu+books+pdf+free+download+part+1
    • http://files.alyssaastevenson.com/uploads/1/3/1/8/131871864/6353871.pdf
    • http://files.mikaelpettersson.net/uploads/1/3/1/3/131381464/joledaximigex-latoxujiwit.pdf
    • http://files.earthwalkwithkv.com/uploads/1/3/0/8/130874667/kegibafawowuvisa.pdf
    • http://nomir.zacharyscruggs.com/uploads/1/3/2/3/132302872/kifuvobowit-porapuzifu-rakokebusawiko-tajumanepi.pdf
    • https://cdn.shopify.com/s/files/1/0448/0778/2557/files/i_ching.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4503/files/20960665775.pdf
    • https://cdn.shopify.com/s/files/1/0431/9569/5268/files/86663367151.pdf
    • https://cdn.shopify.com/s/files/1/0432/5389/1232/files/how_to_be_a_great_speaker.pdf
    • https://cdn.shopify.com/s/files/1/0433/2758/6472/files/5514941466.pdf
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/sleepwell_darling_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0430/9044/4445/files/vipimedudatemodega.pdf
    • https://cdn.shopify.com/s/files/1/0435/9212/2527/files/15395307829.pdf
    • https://cdn.shopify.com/s/files/1/0429/3174/9031/files/17544880151.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/17851151337.pdf
    • https://cdn.shopify.com/s/files/1/0433/1329/9620/files/97239058962.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13977314479.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_off00004759.bin
89d7b68c8e4b2fb036085636dc5bdd3ef68e7741c93492a448aa60313aff655b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4759 5388 bytes
font_01_sfnt_off000059db.bin
e270e0c9d2abd8a0fcd7538964f92eec75dcdfc989d2ccd4258554cfb9ca5dd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59DB 9668 bytes

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