Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f908549e9999dbe…

MALICIOUS

PDF

42.8 KB Created: 2020-08-31 01:18:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 343764bc1da796369a8626c8e1e07e8a SHA-1: 24db7b2d6172371a5c20818d69afab1d1959b458 SHA-256: 8f908549e9999dbee62f9881d8702faf9e2f320eaeddcb2d9ba58c7c404d10c4
152 Risk Score

Malware Insights

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

The PDF file contains a prominent link disguised as a movie download, which is a common lure for phishing or malware distribution. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the primary URL as pointing to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The document body, though partially corrupted, contains text related to 'Sanam re 2016 full movie mp4 downloa' and the malicious URL, reinforcing the lure.

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.club/wix?keyword=sanam+re+2016+full+movie+mp4+downloa
    • https://cdn.shopify.com/s/files/1/0438/9827/3944/files/12946596669.pdf
    • https://cdn.shopify.com/s/files/1/0430/0118/4417/files/xaluzuxufebalodag.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0401/files/19510402293.pdf
    • https://static.usrfiles.com/ugd/defdb4_da38babb835a40758e356e3e6a9a18c6.pdf
    • https://static.usrfiles.com/ugd/b7ab08_7e4559181fb24cb3988bf9d8759793f0.pdf
    • https://static.usrfiles.com/ugd/e2c250_f7c6b13fd4914bcc97089514ae140fa0.pdf
    • https://static.usrfiles.com/ugd/b8c837_0f1025a04ad5401f862ceab7ce9da77f.pdf
    • https://static.usrfiles.com/ugd/b8c837_56a55d44d62a4731ad5ed01b4f256b52.pdf
    • https://static.usrfiles.com/ugd/4b68be_762d0270c6d94a5283a65ab71a09af6c.pdf
    • https://cdn.shopify.com/s/files/1/0432/7515/7670/files/jopodupamokugokalevovamot.pdf
    • https://cdn.shopify.com/s/files/1/0435/8841/9741/files/zebevu.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_off00005b35.bin
6fe44b794ff702365ea15b9e2c14767757911fea2469db5eaf322ba345df31c1
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B35 3208 bytes
font_01_sfnt_off000066d1.bin
8e937fffe2e3794f1cf71f6cea70033bfa53f01a7d10de36be4d7503d51a7953
pdf-font-stream PDF embedded font (sfnt) at offset 0x66D1 5832 bytes
font_02_sfnt_off00007ab2.bin
ce4b4c98ea909d5242c5db8ea4887fa5442f82bced81ed54ca7c406958cf2d26
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AB2 10380 bytes