Malicious PDF — malware analysis report

Static analysis result for SHA-256 04a60ec23fbe61ca…

MALICIOUS

PDF

38.9 KB Created: 2020-08-15 00:04:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72af8d7429979554d5eb8f76da88682d SHA-1: bd7f5ad41e2c478f89e1c35879890e223f120f06 SHA-256: 04a60ec23fbe61ca665061f4a46b4c9496ab5939a949d8430f4ffd68849a9692
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one identified as a malicious redirector. The document body, though partially corrupted, includes the same URL, suggesting an attempt to drive traffic to malicious infrastructure. The presence of a large number of external PDF links also indicates a link farm, likely for SEO manipulation or to obscure the 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.ru/pify?keyword=lamination+sheets+colours+in+pakistan
    • http://sikobipar.listentograndmomma.com/uploads/1/3/0/7/130738950/sajelo-gokeban-lazezawojikaza.pdf
    • http://lavun.integrativemysticism.com/uploads/1/3/1/6/131636948/bf09a42a.pdf
    • http:///\/codecanyon.net\/,nowPlayingText:No,rewindShow:No,qualityShow:No,infoShow:No,shareShow:No,facebookShow:No,twitterShow:No,facebookShareName:Elite
    • http:///\/codecanyon.net\/item\/elite-video-player-wordpress-plugin\/10496434,facebookShareDescription:Elite
    • http:///\/codecanyon.net\/item\/elite-video-player-wordpress-plugin\/10496434
    • http:///\/yourwebsite.com\/embed\/index.html,embedCodeW:746,embedCodeH:420,embedShareLink:http:///\/codecanyon.net\/,showAllControls:false,autohideControls:2,hideControlsOnMouseOut:No,logoShow:Yes,logoPath:,logoPosition:bottom-right,logoClickable:Yes,logoGoToLink:http:///\/codecanyon.net\/,advertisementTitle:Advertisement,skipAdvertisementText:Skip
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/87496096307.pdf
    • https://cdn.shopify.com/s/files/1/0431/5552/1700/files/jodonagesagatuz.pdf
    • https://cdn.shopify.com/s/files/1/0433/5271/9515/files/72143932041.pdf
    • https://cdn.shopify.com/s/files/1/0435/4693/5447/files/93584755007.pdf
    • https://cdn.shopify.com/s/files/1/0435/0545/1160/files/12034308237.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4829/files/easy_color_by_number.pdf
    • https://cdn.shopify.com/s/files/1/0433/4980/3159/files/botezopubuf.pdf
    • https://cdn.shopify.com/s/files/1/0439/1947/4856/files/41471781868.pdf
    • https://cdn.shopify.com/s/files/1/0437/0500/8293/files/24259347947.pdf
    • https://cdn.shopify.com/s/files/1/0434/7002/8966/files/meteorite_armor_terraria.pdf
    • https://cdn.shopify.com/s/files/1/0433/4295/4661/files/asthma_action_plan_2020.pdf
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/dogugosumeziwizexovok.pdf
    • https://cdn.shopify.com/s/files/1/0431/4998/3905/files/82053680045.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000057fb.bin
74919adb67f89ea0ff287143c8dd7d8fffc7d304bab8bbfd52009f7db37a593e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57FB 5176 bytes
font_01_sfnt_off00006969.bin
1775151b12c3288fcbc19ec309036d1539fc1d80a1123eb42225c517fa4678dc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6969 11008 bytes

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