Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa97931dbda0481a…

MALICIOUS

PDF

59.4 KB Created: 2020-08-13 00:52:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bc0f0f6f5bc29c5c2638d74a65e230e SHA-1: 89d86438d385f9bd9c9bbce7b14fe89a759444ff SHA-256: fa97931dbda0481a09a19b3faac4c6556d8123bad849b41c9060bbdf4f704967
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, also contains the malicious URL. This suggests the primary goal is to lure the user to a malicious site, likely for further exploitation or credential harvesting. The presence of a link farm further supports a malicious intent to distribute malicious content.

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=affections+touching+across+time+piano+pdf
    • http://vaguju.laura-walters.com/uploads/1/3/1/0/131071164/talirovimonukumeni.pdf
    • http://files.elliottforrest.com/uploads/1/3/2/8/132815054/juzepiketopiv.pdf
    • http://files.illustrationpad.com/uploads/1/3/0/7/130775583/60d2ba971a953.pdf
    • http://files.journeybackancestry.com/uploads/1/3/1/4/131483279/8695e47d9d79cd.pdf
    • http://mijako.saverycreekfurniture.com/uploads/1/3/1/6/131606289/fe3d776.pdf
    • https://cdn.shopify.com/s/files/1/0429/6779/3820/files/stem_bridge_building.pdf
    • https://cdn.shopify.com/s/files/1/0430/7887/7337/files/approximating_square_root.pdf
    • https://cdn.shopify.com/s/files/1/0429/0124/2022/files/mevujofetak.pdf
    • https://cdn.shopify.com/s/files/1/0431/3192/8740/files/pamewijivuzajajekoded.pdf
    • https://cdn.shopify.com/s/files/1/0429/2280/3366/files/87831353948.pdf
    • https://cdn.shopify.com/s/files/1/0433/6163/2406/files/hindu_baby_boy_names_file.pdf
    • https://cdn.shopify.com/s/files/1/0429/2568/6951/files/pixumewuxurapojanumaxene.pdf
    • https://cdn.shopify.com/s/files/1/0437/6900/4190/files/articles_a_an_the_zero_article_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0431/4392/1820/files/sovedowinusuwinewekuxavu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0080/7074/files/73118890993.pdf
    • https://cdn.shopify.com/s/files/1/0433/8286/6083/files/isotropic_orthotropic_and_anisotropic_materials.pdf
    • https://cdn.shopify.com/s/files/1/0440/4248/5910/files/96417836476.pdf
    • https://cdn.shopify.com/s/files/1/0431/4991/8362/files/66822924790.pdf
    • https://cdn.shopify.com/s/files/1/0432/5307/2022/files/gutuvejobewivuxuzoduxepa.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_off00009372.bin
09791c99936d199da5d819f4261fa65858b27a922ce230f8cb05e92a9a649e8d
pdf-font-stream PDF embedded font (sfnt) at offset 0x9372 6988 bytes
font_01_sfnt_off0000aaea.bin
8215401d49ff48b082e54bbce71c15131c814f3e03f1d35f1f48d94c34ec73f3
pdf-font-stream PDF embedded font (sfnt) at offset 0xAAEA 5528 bytes
font_02_sfnt_off0000bd83.bin
c60eedac2abd928a5148376af4fe4064cb74b000ba0b27170f7aada1b0ba7f55
pdf-font-stream PDF embedded font (sfnt) at offset 0xBD83 9976 bytes