Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f885c1c825a60a0…

MALICIOUS

PDF

37.8 KB Created: 2020-08-07 02:45:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9408023812dbf6d77adab294d1922a59 SHA-1: 587867b7feba6818f9c43ed7df39d4e65e204881 SHA-256: 2f885c1c825a60a02c87d9cfb531e8fce6dfa5d71cc5ad484f5bc54034e5c6cc
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a "map projection textbook pdf". 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=map+projection+textbook+pdf
    • http://files.twig-designs.com/uploads/1/3/2/8/132814073/beradozopafubedapono.pdf
    • http://samebam.alphak-9designs.com/uploads/1/3/1/6/131636725/gezezi.pdf
    • http://files.cococollections.net/uploads/1/3/1/4/131437319/wonafeguwet_minawiwa.pdf
    • https://cdn.shopify.com/s/files/1/0438/1710/7616/files/zafazadoko.pdf
    • https://cdn.shopify.com/s/files/1/0436/5480/7717/files/lipazegirodet.pdf
    • https://cdn.shopify.com/s/files/1/0436/6493/3014/files/french_english_bilingual_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0436/2888/8217/files/youtube_to_ringtone_iphone_app.pdf
    • https://cdn.shopify.com/s/files/1/0432/8757/6740/files/85865174214.pdf
    • https://cdn.shopify.com/s/files/1/0433/4944/2715/files/pam_anderson_tommylee_video.pdf
    • https://cdn.shopify.com/s/files/1/0434/8733/0464/files/dalovofu.pdf
    • https://cdn.shopify.com/s/files/1/0432/1227/5870/files/semegobixu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0801/6027/files/26243770266.pdf
    • https://cdn.shopify.com/s/files/1/0436/1509/2894/files/lithiase_vsiculaire_traitement.pdf
    • https://cdn.shopify.com/s/files/1/0436/4995/8046/files/66525844663.pdf
    • https://cdn.shopify.com/s/files/1/0429/9839/9139/files/24583674854.pdf
    • https://cdn.shopify.com/s/files/1/0439/4047/9131/files/metaphysical_bible_dictionary.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dovaxetudomorunuk.pdf
    • https://cdn.shopify.com/s/files/1/0428/3518/1724/files/45832662455.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_off000048c1.bin
84a3c249f8dc7d6fa2b3ef4b211a8a3b03a0687d2a8e298dace0b5cb10b19a2e
pdf-font-stream PDF embedded font (sfnt) at offset 0x48C1 5080 bytes
font_01_sfnt_off00005a1c.bin
22597946303b7ea9f90c56ae6bd2e5644e36d2a518ffa04f823878fae20922eb
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A1C 9976 bytes
font_02_sfnt_off00007c00.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C00 4324 bytes