Malicious PDF — malware analysis report

Static analysis result for SHA-256 911e09fe615ae2f1…

MALICIOUS

PDF

36.5 KB Created: 2020-08-23 23:45:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f0d31f755480b903bc3366c3ad4c01fa SHA-1: b168f9aa5bf4041d8ae6b38c8df1bdf2f2c6628d SHA-256: 911e09fe615ae2f1efb52bcaf34a48038b5098d809891eae7c5813f510ba1ddd
152 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one identified as a known malicious redirector. The ML classifier also flagged the document as malicious. The presence of a link farm suggests an attempt to manipulate search engine results or distribute malicious content through a large number of seemingly benign links. No scripts were extracted, and the document body was heavily obfuscated.

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=brush+color+splash+vector+free
    • http://files.mikenoffkemasonry.ca/uploads/1/3/0/7/130776602/5064539.pdf
    • http://files.anzacsofgallipoli.com/uploads/1/3/1/1/131163872/14d2dfb.pdf
    • http://files.thefamilyheritagedetective.com/uploads/1/3/1/4/131437812/wirajojapawat.pdf
    • http://files.godlylifelearningcenterinternationalministries.com/uploads/1/3/1/0/131071166/3798941.pdf
    • https://cdn.shopify.com/s/files/1/0430/8638/1210/files/iso_internal_audit_checklist_template.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/love_come_down_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0433/7850/7934/files/81099989891.pdf
    • https://cdn.shopify.com/s/files/1/0432/9380/2646/files/kolupebabobixezewugebur.pdf
    • https://cdn.shopify.com/s/files/1/0430/7140/6241/files/9077990460.pdf
    • https://cdn.shopify.com/s/files/1/0431/8917/4432/files/ipl_cricket_quiz_with_answers_2019.pdf
    • https://cdn.shopify.com/s/files/1/0432/5202/3458/files/32262538587.pdf
    • https://cdn.shopify.com/s/files/1/0440/6158/9669/files/ukulele_tabs_somewhere_over_the_rainbow.pdf
    • https://cdn.shopify.com/s/files/1/0434/8959/1461/files/round_to_3_decimal_places.pdf
    • https://cdn.shopify.com/s/files/1/0440/6693/0840/files/82760525524.pdf
    • https://cdn.shopify.com/s/files/1/0437/0723/6503/files/autotrol_1550_tc_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/8113/0394/files/gobagaparemitizolav.pdf
    • https://cdn.shopify.com/s/files/1/0430/2517/0595/files/wordly_wise_book_6_lesson_11_answers.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_off0000530d.bin
606e859851da9c45d87e65ff0a129e78ad67a8d17dc88aec8af4d2610809dd69		 pdf-font-stream PDF embedded font (sfnt) at offset 0x530D 5212 bytes
font_01_sfnt_off000064ce.bin
b91df547af988259e68cd25fb5d33e9ce1aacf17e1479605d29416df0813785f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64CE 9436 bytes

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