Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e1074a73149a2be…

MALICIOUS

PDF

43.6 KB Created: 2020-09-01 11:09:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 16e99ce1c3d46b2e1d355a82c9c45721 SHA-1: b11b72f30457b4c59d72899f6edc690aa6c8c599 SHA-256: 9e1074a73149a2be7c943b96dd16a74862dab5cb01228ecaf7b92759cc8de39a
152 Risk Score

Malware Insights

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

This PDF file contains embedded links that point to a known malicious redirector. The document body, though heavily obfuscated, appears to contain the same URL and related benign-looking PDF links, suggesting a lure to a malicious site. The primary malicious indicator is the redirector URL, which is designed to lead users to further malicious content.

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/wix?keyword=iam+role+cloudformation+yaml
    • https://static.usrfiles.com/ugd/33a16d_19b2829ca7bc409d89c79b302bb57aac.pdf
    • https://static.usrfiles.com/ugd/5360f8_edd113c0646d45048ee33618d03c3e69.pdf
    • https://static.usrfiles.com/ugd/34e21e_5ac9edf97401407b9e263111e91ac3fb.pdf
    • https://static.usrfiles.com/ugd/b8c837_49aec9fce2f141f186f63bb2d1b46d0f.pdf
    • https://static.usrfiles.com/ugd/efb3f0_4ca0b6cc443745f39fa1c067438ddf21.pdf
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/83128207505.pdf
    • https://cdn.shopify.com/s/files/1/0432/3006/8894/files/functional_strength_training.pdf
    • https://cdn.shopify.com/s/files/1/0435/3631/8616/files/benopuzut.pdf
    • https://cdn.shopify.com/s/files/1/0432/6942/3269/files/wagazuwewipotirepegopuf.pdf
    • https://cdn.shopify.com/s/files/1/0430/8280/9508/files/zobifunatuxoburonerik.pdf
    • https://cdn.shopify.com/s/files/1/0431/7646/0448/files/sitefebibuzifumu.pdf
    • https://cdn.shopify.com/s/files/1/0435/3549/9418/files/hd_movies_online_free_box_office_apk.pdf
    • https://cdn.shopify.com/s/files/1/0434/5063/0296/files/41302877771.pdf
    • https://static.usrfiles.com/ugd/7d1dc9_11f5f549f73248e5b6fb5b1712bd7e01.pdf
    • https://static.usrfiles.com/ugd/b8c837_e21ebc83e53545c0992db7a8490f7f50.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.

FilenameKindSourceSize
font_00_sfnt_off00006cc3.bin
cc40c811ae07666b934de37f47451580aa7a864f85808b6836b435f4bb5ddf7b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC3 5028 bytes
font_01_sfnt_off00007dd3.bin
15a083cab7336d8fa6e5b4e5c60ed7f9fcfab4ff21e9ec6c7432e7488f90a4b4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD3 10732 bytes