Malicious PDF — malware analysis report

Static analysis result for SHA-256 e85fefa7e63d1086…

MALICIOUS

PDF

36.4 KB Created: 2020-08-23 04:50:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99719fd42020ed62d6d2f5c51de688a4 SHA-1: 308e29bde6b6fff061e9eb52bb33492be866b465 SHA-256: e85fefa7e63d1086fbb5acea295d092197ebc653a83ddfb26edebc44a518d09c
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Shopify domains hosting other PDFs, which is indicative of a link farm. One of these links, 'https://ttraff.cc/pify?keyword=weather+report+durban+today', is flagged as a known malicious redirector. This suggests the document's primary purpose is to lure users through a deceptive link to a malicious site, likely for phishing or to download further malware.

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=weather+report+durban+today
    • http://files.jhwolfanger.com/uploads/1/3/1/8/131857818/3249006.pdf
    • https://cdn.shopify.com/s/files/1/0432/0477/1999/files/80323643970.pdf
    • https://cdn.shopify.com/s/files/1/0437/8460/1758/files/pubopowuxeweloru.pdf
    • https://cdn.shopify.com/s/files/1/0429/2375/3635/files/gebur.pdf
    • https://cdn.shopify.com/s/files/1/0436/7679/5030/files/91297937693.pdf
    • https://cdn.shopify.com/s/files/1/0429/4855/9004/files/traditional_bowyer_s_bible_volume_1.pdf
    • https://cdn.shopify.com/s/files/1/0446/0858/5891/files/skyrim_anti_crash_mod.pdf
    • https://cdn.shopify.com/s/files/1/0429/9672/7957/files/8548026816.pdf
    • https://cdn.shopify.com/s/files/1/0437/8555/2030/files/how_to_play_arpeggios_on_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0430/6056/0021/files/karejobuvupegijimo.pdf
    • https://cdn.shopify.com/s/files/1/0452/6263/5168/files/argonautika_mary_zimmerman.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_off000045af.bin
b713578649de6a587407b60772df3d4e016f64038809fde0a7eb3863d26830d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45AF 4924 bytes
font_01_sfnt_off00005668.bin
7ace984dc8c13ee6f5f971b9cb899507a7e3e53976454f94892e0698459e9e20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5668 9532 bytes
font_02_sfnt_off00007704.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7704 4324 bytes

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