Malicious PDF — malware analysis report

Static analysis result for SHA-256 d41ce4e0bd99887d…

MALICIOUS

PDF

46.2 KB Created: 2020-08-07 10:19:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d7b9a9c7e01d826e06ae00e8d426f1c SHA-1: daed0a3b2ceaa7fc61d003370889e12b61940c8c SHA-256: d41ce4e0bd99887d222a043a06fcedebc0e8d99b67da0d8302268f965b3345c6
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing indicating a link farm. The primary URL, https://ttraff.ru/pify?keyword=after+20+years+story+in+english+pdf, is identified as a malicious redirector. This suggests the document's purpose is to lure users to malicious content through a chain of redirects, likely for phishing or malware distribution.

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=after+20+years+story+in+english+pdf
    • http://files.madamegeekpub.com/uploads/1/3/2/3/132303061/9924100.pdf
    • http://xegopepal.mysticplanet.shop/uploads/1/3/2/7/132712207/47a750a5201cad.pdf
    • http://files.pda4training.com/uploads/1/3/1/4/131438538/pezibixoxewopup-lisolar-firubef-jejubano.pdf
    • http://files.mackeiganmarketing.com/uploads/1/3/1/4/131452732/sodopafesub.pdf
    • http://files.d20stitchery.com/uploads/1/3/0/7/130775228/jagekuvuwuvog_pevinu_diwilol.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nifafujejugafux.pdf
    • https://cdn.shopify.com/s/files/1/0428/1758/5308/files/11571136959.pdf
    • https://cdn.shopify.com/s/files/1/0429/9807/1449/files/wojato.pdf
    • https://cdn.shopify.com/s/files/1/0430/3591/8489/files/36067717270.pdf
    • https://cdn.shopify.com/s/files/1/0432/8580/7269/files/2365633812.pdf
    • https://cdn.shopify.com/s/files/1/0437/1464/2069/files/lu_decomposition_matlab.pdf
    • https://cdn.shopify.com/s/files/1/0432/6385/2712/files/32017448020.pdf
    • https://cdn.shopify.com/s/files/1/0433/1284/0872/files/12964635365.pdf
    • https://cdn.shopify.com/s/files/1/0428/3544/3871/files/datipepomomom.pdf
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/26524144201.pdf
    • https://cdn.shopify.com/s/files/1/0450/0160/5278/files/how_to_build_a_pc_step_by_step.pdf
    • https://cdn.shopify.com/s/files/1/0428/3590/2631/files/62067018071.pdf
    • https://cdn.shopify.com/s/files/1/0432/5461/2123/files/98663420462.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_off000067d5.bin
aedc98c416e161c5d2ce48b5bd928777c1c46b766ed32e97943b138d4c102091
pdf-font-stream PDF embedded font (sfnt) at offset 0x67D5 5456 bytes
font_01_sfnt_off00007a58.bin
86f7e8115449070a43a51868c79ac8d42f45d2dbb3aeff944ad434d57935147d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A58 10384 bytes
font_02_sfnt_off00009d4f.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D4F 4324 bytes