Malicious PDF — malware analysis report

Static analysis result for SHA-256 b62a64fa6f0bc60d…

MALICIOUS

PDF

51.1 KB Created: 2020-09-19 04:05:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 149a652402c630c3ffc5b15830a64460 SHA-1: 312e5de8e75c6ce9875af7aeb81ed340b54dc1dc SHA-256: b62a64fa6f0bc60d9fa06740d309e1126f9e9112621b4a524880c5476b3f44b0
152 Risk Score

Malware Insights

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

The PDF contains a high number of embedded links, many of which are generated SEO-style links pointing to various PDF files. One critical heuristic identified a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure, disguised as a workshop manual. This suggests a phishing or scam attempt where the user is directed to a malicious site.

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.link/wix?keyword=land+rover+workshop+manual+series+1
    • http://teros.johnnycox.me/uploads/1/3/1/6/131606218/9062644.pdf
    • http://files.highlanddesignsstore.com/uploads/1/3/1/4/131408970/kafifuxijopab-pedogefireb-xofexe-nipel.pdf
    • http://xasunori.reassure.us/uploads/1/3/1/1/131164250/zatupotozuwi.pdf
    • https://cdn.shopify.com/s/files/1/0461/8253/1225/files/plants_vs_zombies_2_android_hack.pdf
    • https://cdn.shopify.com/s/files/1/0429/0609/1673/files/magna_bike_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/3706/3328/files/guxovubewuzolab.pdf
    • https://cdn.shopify.com/s/files/1/0431/1754/3585/files/62344718929.pdf
    • https://cdn.shopify.com/s/files/1/0429/5314/6527/files/45881205139.pdf
    • https://c8d60f3f-29bb-4a8d-806a-61a1f0af9815.filesusr.com/ugd/98e2de_a7aceafccb8e43efa96559232b46e2ad.pdf?index=true
    • https://4345bd7d-1d75-49bf-a739-68c971a93c40.filesusr.com/ugd/1decf9_1cf0a9aa189d47b19f639555e32a9cc2.pdf?index=true
    • https://84df1fc0-7b50-4ecf-a7ba-0addf43e2398.filesusr.com/ugd/e6e573_1398d4ab981442f0b0c0eeb6c2ba5dd2.pdf?index=true
    • https://25165d05-a66f-4be9-a05b-5b988eeb05ca.filesusr.com/ugd/4f92c1_d9510640b510475e990c62a89f39fff4.pdf?index=true
    • https://92e2cd98-7624-464d-b4e1-7d5477e10dac.filesusr.com/ugd/a31856_607c2cc2f38f4c159faa92eb1cc87d65.pdf?index=true
    • https://000141e7-95cb-4d26-a379-9fc19e0e2097.filesusr.com/ugd/72216b_0df22dc1f39b40f6ac11ef40d19d59d9.pdf?index=true
    • https://e3bf4bda-cbd9-4537-a63a-f6226f1aca99.filesusr.com/ugd/54bec1_9ed0009dc0c24d078a233acb70bf5863.pdf?index=true
    • https://f9354831-8fa4-4ab6-b482-ea4bd85b3e65.filesusr.com/ugd/451461_129548b604cc45eeb92e66e39ca6c46c.pdf?index=true
    • https://3fb3941d-ce1f-44d7-a4c2-bc7a52571ca3.filesusr.com/ugd/0cd3a8_3aa489c2e4ff4a4d866a11cf6e063a77.pdf?index=true
    • https://4fd1e8a1-67e1-4260-87d7-527561d4b92c.filesusr.com/ugd/de02f3_d6367b93082c46a9be58f58db674741c.pdf?index=true
    • 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_off00006c35.bin
615990936d56facf4721d0048a63f108cdf3d8ef5ac1568aa16dffdf02d4ea21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C35 5212 bytes
font_01_sfnt_off00007dcd.bin
89ac4fe1996212d626c81a926dffaa296d3097de6953e76328ab6c0bb7eaeb80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DCD 15880 bytes
font_02_sfnt_off0000aee0.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEE0 4324 bytes

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