Malicious PDF — malware analysis report

Static analysis result for SHA-256 da119de231ad3ec3…

MALICIOUS

PDF

35.5 KB Created: 2020-08-03 04:07:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6814481b7c72c226c2c49ba69fe9210b SHA-1: d0f9da4019883a218396e57ad3cd4012fea492dc SHA-256: da119de231ad3ec3d274c6557283e4892bc840ba1ee445af96785d59c8b62c5d
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link to a known malicious redirector. The document body, though heavily obfuscated, contains the same redirector URL and a reference to 'alexandra burke', suggesting a lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm designed to distribute malicious content or obscure the true origin of the attack. 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.cc/pify?keyword=hallelujah+lyrics+alexandra+burke
    • http://files.gatewaycathedral.com/uploads/1/3/1/6/131606807/6057a0a45fdaea.pdf
    • http://bibolif.eng.dsnatural.com/uploads/1/3/1/4/131454549/gebanifu_rixuboxakamegok_xufijasi_wekejixiwuxo.pdf
    • http://files.josephgedeononline.com/uploads/1/3/1/4/131438741/vugovatukeju.pdf
    • http://files.nomadicsteve.com/uploads/1/3/1/4/131437538/42cb4690f8.pdf
    • https://cdn.shopify.com/s/files/1/0429/6510/6847/files/67096250978.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fenajowogotuxukat.pdf
    • https://cdn.shopify.com/s/files/1/0430/9476/9821/files/lepogafavofaze.pdf
    • https://cdn.shopify.com/s/files/1/0429/9220/5978/files/renafabasepine.pdf
    • https://cdn.shopify.com/s/files/1/0437/9623/4400/files/9239271419.pdf
    • https://cdn.shopify.com/s/files/1/0437/6500/6494/files/niximuwetod.pdf
    • https://cdn.shopify.com/s/files/1/0431/6954/6395/files/auto_repair_times_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/7591/1321/files/sejufojajakari.pdf
    • https://cdn.shopify.com/s/files/1/0440/6162/2437/files/sopolaxezufo.pdf
    • https://cdn.shopify.com/s/files/1/0437/4393/6673/files/96848664591.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/kaweni.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2292/files/90300480664.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20116177671.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_off00004d10.bin
81c008cb1d18661a29db028d357c87037a63b26cd1b6cc45913a862239fd3a95
pdf-font-stream PDF embedded font (sfnt) at offset 0x4D10 5440 bytes
font_01_sfnt_off00005f8b.bin
602035c3b896ebe8017a8c24d4c4101dcbe11cfbb32173b6c8a0bb4253d39f18
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8B 9796 bytes