Malicious PDF — malware analysis report

Static analysis result for SHA-256 99e850508d0ad980…

MALICIOUS

PDF

45.7 KB Created: 2020-08-25 00:18:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55f3ca5fcda8fb8e5788c7e87bdd9fdf SHA-1: 9f6174d869f510db5a427d64614501eb36db823e SHA-256: 99e850508d0ad980b154d86b183e21f3b4b5ad3c1b69619a85147673b3668519
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One critical heuristic identified a link to a known malicious redirector at https://ttraff.ru/pify?keyword=franchising+for+dummies+pdf. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution. 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=franchising+for+dummies+pdf
    • http://files.stutteringacademy.com/uploads/1/3/0/8/130813524/7b6a8da14d8582.pdf
    • http://files.thesearenotmygrandkids.com/uploads/1/3/1/3/131380213/fagudulosir.pdf
    • http://files.grettawilson.com/uploads/1/3/1/4/131437351/5306487.pdf
    • http://files.iamhanqin.com/uploads/1/3/1/4/131437249/keridirugik_zeduteteju_xorukunu.pdf
    • http://files.aquariumsalesandservice.com/uploads/1/3/0/7/130738871/zomevowapotipeketupa.pdf
    • https://cdn.shopify.com/s/files/1/0451/6413/4554/files/object_adjective_clauses_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0448/0565/2637/files/52784434454.pdf
    • https://cdn.shopify.com/s/files/1/0438/4335/4781/files/12094178441.pdf
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/sinotruk_parts_catalog.pdf
    • https://cdn.shopify.com/s/files/1/0430/3293/6605/files/15693190813.pdf
    • https://cdn.shopify.com/s/files/1/0432/3383/7224/files/tegosuvabovopix.pdf
    • https://cdn.shopify.com/s/files/1/0431/4464/2715/files/85855323092.pdf
    • https://cdn.shopify.com/s/files/1/0432/0732/7904/files/wow_silk_bag.pdf
    • https://cdn.shopify.com/s/files/1/0430/9434/3841/files/zijedavelubitadamexep.pdf
    • https://cdn.shopify.com/s/files/1/0428/2246/7750/files/livro_aldeia_global.pdf
    • https://cdn.shopify.com/s/files/1/0462/6366/4794/files/begenaralusa.pdf
    • https://cdn.shopify.com/s/files/1/0434/6321/3209/files/4mat_learning_styles.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_off0000634d.bin
9c2ddc5a61ab97e4e2d73a3c4e3efaae57374453c28a539d06e1ff37dbd7ed03
pdf-font-stream PDF embedded font (sfnt) at offset 0x634D 5296 bytes
font_01_sfnt_off0000750e.bin
70bc242d276594177e47a882bde68d8ae57a91d932be02e83b74cf71816f2281
pdf-font-stream PDF embedded font (sfnt) at offset 0x750E 12140 bytes
font_02_sfnt_off00009bff.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x9BFF 4324 bytes