Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d22878853735cf7…

MALICIOUS

PDF

43.9 KB Created: 2020-08-03 19:19:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ef343a7f0984429bef5ce14d3603edef SHA-1: 2b2250dcd2c0ac6fc4354d2fbc916defad6050a6 SHA-256: 9d22878853735cf7b256dcd3b5a691c99f0849d66b099b4169ecd30126e04406
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a diet-related PDF. The document body, though heavily obfuscated, contains the same lure text and the malicious URL. The presence of a large number of external PDF links suggests a link farm or SEO poisoning tactic to distribute malicious content.

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.com/pify?keyword=egg+diet+for+weight+loss+pdf
    • http://files.millimanquarterhorses.com/uploads/1/3/0/7/130738765/rujefimodedizi.pdf
    • http://files.tuitionchemistry.com/uploads/1/3/1/4/131452858/nufez-pirigadoz-reliwabixesewim.pdf
    • http://files.2dmuseum.com/uploads/1/3/0/7/130776864/fiwadomudo-wexuwew-xegivojug.pdf
    • https://cdn.shopify.com/s/files/1/0431/8766/7104/files/68171076590.pdf
    • https://cdn.shopify.com/s/files/1/0432/3613/0983/files/97164206503.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rokagarunawawutasa.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/gokam.pdf
    • https://cdn.shopify.com/s/files/1/0433/4954/1013/files/xovapivazonofufulejajuto.pdf
    • https://cdn.shopify.com/s/files/1/0432/6254/1982/files/dadofubovowitoxereke.pdf
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/kufazeroguxorukux.pdf
    • https://cdn.shopify.com/s/files/1/0435/2950/2874/files/josijinogedogajasakajese.pdf
    • https://cdn.shopify.com/s/files/1/0448/3658/5629/files/free_online_editor_delete_pages.pdf
    • https://cdn.shopify.com/s/files/1/0430/8038/4674/files/sizinufogumefelul.pdf
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/binivoxe.pdf
    • https://cdn.shopify.com/s/files/1/0437/2532/4439/files/animation_background_layout_from_student_to_professional.pdf
    • https://cdn.shopify.com/s/files/1/0431/6119/0554/files/1997846493.pdf
    • https://cdn.shopify.com/s/files/1/0429/0609/1673/files/css_reset_stylesheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/8254/6341/files/where_does_twitch_install_minecraft.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_off00006c46.bin
d36d9001bccb2079ff730640bd788ce2d539dd19e71b488f1b9fb2b186fc7c6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C46 5140 bytes
font_01_sfnt_off00007dde.bin
5d9db275fd445976f031ed01a5ef1c66a7c95074bdd65f0c40c6d5a48d61cb03		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DDE 10720 bytes

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