Malicious PDF — malware analysis report

Static analysis result for SHA-256 5062575c3ecbebf5…

MALICIOUS

PDF

55.9 KB Created: 2020-09-01 03:07:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e9846a04082a77c284e5ee20668805cc SHA-1: d26e9445c8e2d819d947e5edd8dd421623a01a62 SHA-256: 5062575c3ecbebf561c65f34711175c557aa3faf2ef8dccd7abb2ed9b680a688
154 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a free software offer, which is a common lure for phishing or malware delivery. The link directs to a known malicious redirector, indicating a high likelihood of malicious intent. The document body, though heavily corrupted, contains the text 'Autocad for macbook air free' and the malicious URL, reinforcing the lure. The PDF also hosts a large number of external links, many pointing to Shopify, suggesting a link farm for SEO poisoning or to obscure the final malicious destination.

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.cc/wix?keyword=autocad+for+macbook+air+free
    • https://cdn.shopify.com/s/files/1/0430/1222/7225/files/papipexikubepamulemunoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/7318/3645/files/25556901876.pdf
    • https://cdn.shopify.com/s/files/1/0433/0379/6894/files/5461045549.pdf
    • https://cdn.shopify.com/s/files/1/0434/0459/1255/files/nimuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/7921/2959/files/13156598137.pdf
    • https://static.usrfiles.com/ugd/efb3f0_ccc9b7a260674320a100174c5f0b8653.pdf
    • https://static.usrfiles.com/ugd/b8c837_bb182faf500d43258938161b721e2c6e.pdf
    • https://static.usrfiles.com/ugd/9a242c_f47ba181a3dd4dcaa93e4b43a2829931.pdf
    • https://static.usrfiles.com/ugd/b8c837_6506e5b7981440eb9d1921ebb0cbf376.pdf
    • https://static.usrfiles.com/ugd/b8c837_ed579ad385854d5c88d434ac03084648.pdf
    • https://cdn.shopify.com/s/files/1/0434/5734/7749/files/81651330419.pdf
    • https://cdn.shopify.com/s/files/1/0435/0076/5336/files/43443822324.pdf
    • https://cdn.shopify.com/s/files/1/0428/9983/2995/files/city_of_fallen_angels_audiobook_mp3_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/0069/1866/files/11111161235.pdf
    • https://cdn.shopify.com/s/files/1/0433/4341/3407/files/20809820395.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_off00007de1.bin
2bff45a1b7e2fa06208da11f7a1940b13b26a7bef6829d9fade01b3377560eaf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE1 5152 bytes
font_01_sfnt_off00008f58.bin
0080daeed4c1dc0700c789f99f7d972e1e176b85bfcc36b147f2826353d3a307		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F58 14256 bytes
font_02_sfnt_off0000bd2f.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD2F 16164 bytes

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