Malicious PDF — malware analysis report

Static analysis result for SHA-256 43e27e82de175893…

MALICIOUS

PDF

46.2 KB Created: 2020-08-28 04:50:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: dd64fd5144c0cc4a8b42b6b40677a65f SHA-1: 8da6d4f7dd881f3f88e70ff5779a08433ac6c2db SHA-256: 43e27e82de175893a80046da2f172fc08861cb482c22dce0943d78a2b064c5f9
152 Risk Score

Malware Insights

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

This PDF file contains a prominent link to a redirector URL, which is designed to lure users into downloading potentially malicious content. The document body explicitly mentions "Codashop pro hack apk", indicating a social engineering lure. The ML classifier also strongly flagged this PDF as malicious, supporting the assessment of a malicious redirector.

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/pify?keyword=codashop+pro+hack+apk
    • http://files.wlotusliving.com/uploads/1/3/1/4/131406258/6074576.pdf
    • http://dunilop.theroanokerestaurant.com/uploads/1/3/1/4/131437254/wimokitaj.pdf
    • http://rugopapun.ownastandardbred.com/uploads/1/3/2/8/132814969/4015866.pdf
    • http://files.ravensrelics.com/uploads/1/3/0/7/130775368/movesal_kewarini.pdf
    • http://files.galateeagallery.com/uploads/1/3/2/3/132302966/wuporupi.pdf
    • https://cdn.shopify.com/s/files/1/0461/9445/8773/files/wukojopesagejorixeturej.pdf
    • https://cdn.shopify.com/s/files/1/0441/2011/3304/files/subject_verb_agreement_examples.pdf
    • https://cdn.shopify.com/s/files/1/0428/8082/7558/files/wexajokimida.pdf
    • https://cdn.shopify.com/s/files/1/0434/8549/5453/files/85603842170.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vujunuvitiwowus.pdf
    • https://cdn.shopify.com/s/files/1/0430/4614/2114/files/mirogagokujewezubuxe.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/53048619866.pdf
    • https://cdn.shopify.com/s/files/1/0437/5950/1464/files/how_to_download_file_from_github.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/80986843592.pdf
    • https://cdn.shopify.com/s/files/1/0428/0510/0711/files/worenenexiwudegomemafu.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_off00006ad2.bin
1031d2c856dc355edf08fdf14e6b0206f41ad831ebf04bef649cca6b7c92b6a0
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD2 4652 bytes
font_01_sfnt_off00007aa8.bin
9571dbfc426e8491143cc3b0089ebcf139ca10d622e6f21281812138cc10c43e
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AA8 10280 bytes
font_02_sfnt_off00009dbf.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x9DBF 4324 bytes