PDF malware analysis — malicious · a635304f7158601b

MALICIOUS

PDF

54.6 KB Created: 2020-09-01 15:15:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: e78fad3f65a4f480257ff68c26c4dc63 SHA-1: 1dbed6887f9635b174899e63602bb041276da5e5 SHA-256: a635304f7158601bd980dee87a1334ba2fca2436ce53e769fd849a82275fbbda

130 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.001 Malicious Link

The PDF file contains a critical heuristic indicating it's a malicious redirector, pointing to 'https://ttraff.cc/wix?keyword=febrile+neutropenia+antibiotics+guidelines'. Another critical heuristic identified it as a PDF link farm with 28 external links. The document body, though heavily obfuscated, contains the same URL. The presence of urgency language further supports a phishing or social engineering attack pattern.

Heuristics 4

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.
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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/wix?keyword=febrile+neutropenia+antibiotics+guidelines
- https://static.usrfiles.com/ugd/374ce0_cac06a9e570e49a9aa0cfae0ddf8c9b7.pdf
- https://static.usrfiles.com/ugd/02beb7_406b87e23b4f4c4f8d87f277b376a6df.pdf
- https://static.usrfiles.com/ugd/362633_7dd7e1c5972c44cda486edc8a7f96289.pdf
- https://static.usrfiles.com/ugd/b8c837_e1dbbfb8f8a042a18d05d0f8565bf543.pdf
- https://static.usrfiles.com/ugd/455f95_64c54e3036cc4901a39c6d66a5144b5c.pdf
- https://static.usrfiles.com/ugd/b8c837_77c975ca356f4feab207798eb7a5a9c0.pdf
- https://cdn.shopify.com/s/files/1/0437/6163/1389/files/cambridge_a_level_economics_past_exam_papers.pdf
- https://cdn.shopify.com/s/files/1/0432/4645/2899/files/pathophysiology_of_heart_disease_book.pdf
- https://cdn.shopify.com/s/files/1/0440/4386/2181/files/lajezat.pdf
- https://cdn.shopify.com/s/files/1/0433/4170/9462/files/weather_report_berlin_ct.pdf
- https://cdn.shopify.com/s/files/1/0437/4872/0789/files/cengage_maths_calculus_download.pdf
- https://cdn.shopify.com/s/files/1/0429/3217/5014/files/30158035517.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexidemunuviviradepinitim.pdf
- https://cdn.shopify.com/s/files/1/0433/9643/2021/files/81931194581.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.

Filename	Kind	Source	Size
`font_00_sfnt_off00009068.bin` `1468ba0f73fff2c45fb4b009a73389472f16f9576d72d9ab72a5ff1b01430694`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9068	5336 bytes
`font_01_sfnt_off0000a28f.bin` `a1428cbfc77a37ab3272703ffb6008827edcaeb2e94748451a8493ac118003e2`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA28F	13664 bytes

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