Malicious PDF — malware analysis report

Static analysis result for SHA-256 014a7c4316a73261…

MALICIOUS

PDF

55.6 KB Created: 2020-08-04 04:12:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81e2135329a5cb4cb4129a014da1497b SHA-1: 630f2ad726a766440523281b58ff85ae56fda2b6 SHA-256: 014a7c4316a73261a49c19d60bf104d75337d1cfa785a5082d1db700decab044
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains a mass external link farm, with a primary malicious redirector URL pointing to 'ttraff.cc'. This URL is designed to lure users into downloading further malicious content, masquerading as a B.Sc. Maths solution PDF. The ML classifier strongly supports the malicious nature of this document.

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=b.+sc+maths+solution+pdf
    • http://files.musclegear-asia.com/uploads/1/3/0/8/130874478/kekitovem.pdf
    • http://files.kroottarkmeel.com/uploads/1/3/1/4/131453897/74c6e36bc54.pdf
    • http://files.paduastore.com/uploads/1/3/0/7/130775013/7282363.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fedorahosted.org/lohit
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pezudatilekubad.pdf
    • https://cdn.shopify.com/s/files/1/0431/3609/0267/files/musesilided.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/10588857949.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jakenetukuzalavat.pdf
    • https://cdn.shopify.com/s/files/1/0429/6255/0940/files/pasenawaloj.pdf
    • https://cdn.shopify.com/s/files/1/0432/9131/2288/files/91328116468.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/61259485886.pdf
    • https://cdn.shopify.com/s/files/1/0437/2506/2298/files/wixixuwatof.pdf
    • https://cdn.shopify.com/s/files/1/0431/3251/8555/files/14019192043.pdf
    • https://cdn.shopify.com/s/files/1/0434/8179/2677/files/4126957390.pdf
    • https://cdn.shopify.com/s/files/1/0433/6487/6453/files/bigaxisixixaxuripik.pdf
    • https://cdn.shopify.com/s/files/1/0432/0333/0209/files/29072377994.pdf
    • https://cdn.shopify.com/s/files/1/0437/3587/5745/files/51483574093.pdf
    • https://cdn.shopify.com/s/files/1/0433/5442/3445/files/gutavogoguxom.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e57.bin
33119cee5fa97a0cce9b25db7772f93e013290e00317b0bf2d618f5544482144		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E57 5380 bytes
font_01_sfnt_off00008086.bin
55deeea3a93518db721a97da0d8f9359fab86ec4add728a48e55287c41c27800		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8086 3204 bytes
font_02_sfnt_off00008d76.bin
7bb91423d63eb6bd7c2657278979848d60b7d38679106ec23dbd755ba6ab3d32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D76 2320 bytes
font_03_sfnt_off000097c6.bin
1fad7288c3450e2bbff905a6a3b6b09850f093ca12c1145f22124bd01979a087		 pdf-font-stream PDF embedded font (sfnt) at offset 0x97C6 10276 bytes
font_04_sfnt_off0000baf4.bin
5f3bf50395e8d1b65f29ab90a426c3665da69f8437ae50e88eef237d5e22552a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBAF4 16224 bytes

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