Malicious PDF — malware analysis report

Static analysis result for SHA-256 50af5accba2c324a…

MALICIOUS

PDF

58.7 KB Created: 2020-07-27 14:33:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c7f59a3aea45f14db2c2593be825c202 SHA-1: a1337630a050cd033b926f385d3b3f5121e66e58 SHA-256: 50af5accba2c324ae92d39ff81b30685226ed7ff6927700f1b6d2e5a51589a79
152 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier as malicious and contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The document body is heavily obfuscated, but the presence of numerous links, including those hosted on domains like 'vapee-scapeks.com' and 'royalqueendom.com', suggests a link farm or redirection scheme designed to lead users to malicious content. The primary attack pattern involves leveraging these links for user redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=triops+cancriformis+longicaudatus
    • http://files.vapee-scapeks.com/uploads/1/3/1/6/131606603/rakewew_totupimajaf_dorumuxezolemiv_gavejuvepol.pdf
    • http://files.royalqueendom.com/uploads/1/3/0/7/130776536/4633849.pdf
    • http://files.sparc-evangelism.com/uploads/1/3/1/4/131453018/futuvetasuda_temumilup.pdf
    • http://files.manalily.com/uploads/1/3/1/3/131397971/velizodirigededam.pdf
    • http://files.shadesofthetropics.com/uploads/1/3/1/6/131606072/woxinidimid.pdf
    • http://files.manali
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/71069846485.pdf
    • https://cdn.shopify.com/s/files/1/0432/0329/7438/files/bepokivemasikonumuw.pdf
    • https://cdn.shopify.com/s/files/1/0434/8909/9938/files/lizuwivadawugeguxa.pdf
    • https://cdn.shopify.com/s/files/1/0430/8133/4933/files/jozazurezavagove.pdf
    • https://cdn.shopify.com/s/files/1/0432/5654/5433/files/23689959153.pdf
    • https://cdn.shopify.com/s/files/1/0434/8664/2338/files/lamewabemunupava.pdf
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/95095529756.pdf
    • https://cdn.shopify.com/s/files/1/0437/4121/6919/files/dokadizumelini.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nijudesiko.pdf
    • https://cdn.shopify.com/s/files/1/0430/6986/6141/files/43955549738.pdf
    • https://cdn.shopify.com/s/files/1/0433/6222/2232/files/91872567352.pdf
    • https://cdn.shopify.com/s/files/1/0427/8566/9279/files/wepuwituresekokowonodawas.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/26450283228.pdf
    • https://cdn.shopify.com/s/files/1/0430/5253/1869/files/38721070210.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008392.bin
0d70379b6e00eb74007fcb55c9ad3ba71732888a9d16e0888cba1f94d47f4996		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8392 5188 bytes
font_01_sfnt_off00009508.bin
b744d20329a21ba1921c870a4deaacb4064f710d75eb1a58e31c0067c31195cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9508 1716 bytes
font_02_sfnt_off00009dad.bin
5c1fbf3103820cbce7b602f97c6068434cd68f688995227775d260a6e9f2328a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DAD 9824 bytes
font_03_sfnt_off0000bf7b.bin
331a6c4cd0ad1bd8f16d40f15c2f5cedd8ba63d8a4412493cd17b911dc9728ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBF7B 17764 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.