Malicious PDF — malware analysis report

Static analysis result for SHA-256 9032dcc5e9167129…

MALICIOUS

PDF

42.9 KB Created: 2020-08-06 19:24:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e37415c2610a9d8d7f1175bcbfd58a51 SHA-1: 4a62b10a5ef922b6489fdb0e1a9a3f501f87bf8b SHA-256: 9032dcc5e916712920fcf1fbe81189604cb5e8ef52797737dade8c779bac9ee3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link that redirects to a known malicious URL, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body and embedded links suggest a lure related to 'productos de la canasta basica 2020 pdf', likely intended to trick users into clicking the malicious link. The ML classifier also strongly flagged this PDF as malicious.

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=productos+de+la+canasta+basica+2020+pdf
    • http://files.hungerfightersoregon.org/uploads/1/3/0/7/130776451/sekel_vabajisanu.pdf
    • http://files.kilkennyarchclub.com/uploads/1/3/2/6/132681823/e8eccbd6c7e29f.pdf
    • http://files.bigbucksfinancial.com/uploads/1/3/1/6/131606605/tonirodoxanod.pdf
    • http://guvivame.seattleyouthbaseball.com/uploads/1/3/1/4/131408899/rivovotibimu_kaguri_ketoxofi.pdf
    • https://cdn.shopify.com/s/files/1/0428/6539/3831/files/xirelosilexitibufut.pdf
    • https://cdn.shopify.com/s/files/1/0430/0213/4681/files/nom_riesgos_psicosociales.pdf
    • https://cdn.shopify.com/s/files/1/0432/3350/9534/files/kurigovelokudelarexogew.pdf
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/sonokuzor.pdf
    • https://cdn.shopify.com/s/files/1/0435/5942/0063/files/53852924026.pdf
    • https://cdn.shopify.com/s/files/1/0432/2351/5294/files/42523646584.pdf
    • https://cdn.shopify.com/s/files/1/0434/1802/6142/files/12679023409.pdf
    • https://cdn.shopify.com/s/files/1/0433/8574/9654/files/79515857040.pdf
    • https://cdn.shopify.com/s/files/1/0435/6934/8763/files/completing_the_square_practice_problems.pdf
    • https://cdn.shopify.com/s/files/1/0433/3853/0965/files/infinite_stratos_season_3.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_off00006462.bin
5470a6f9a5aee7651cde9cc4e6cc13134271e7c30b4910f00bd0662193532acb
pdf-font-stream PDF embedded font (sfnt) at offset 0x6462 5564 bytes
font_01_sfnt_off00007750.bin
6f929296cd9d51627bfd4ee5f27ccc2351e22db14355815041919ba76989b424
pdf-font-stream PDF embedded font (sfnt) at offset 0x7750 11764 bytes