Malicious PDF — malware analysis report

Static analysis result for SHA-256 37d4377d876c8aad…

MALICIOUS

PDF

26.4 KB Created: 2019-04-30 04:43:10 +01:00 Authoring application: mPDF 5.7
MD5: f83ca5100f14ac2777ce566981e199c8 SHA-1: 0c695add333cab3d5e9930ba05315e6d73e38a99 SHA-256: 37d4377d876c8aada1b6d306f302d7fc06def12e775c1a1b78fa85871537d2b2
90 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to a dynamic DNS domain. The ML_NYX_PDF_MALICIOUS classifier also flagged the document with high confidence. While the document body is heavily obfuscated, the presence of numerous links suggests a tactic to drive traffic to potentially malicious content or engage in SEO poisoning. The URLs themselves, while flagged as benign in this specific analysis, are hosted on a suspicious domain and are part of a link farm, indicating a likely malicious intent to distribute further content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

Heuristics 2

  • 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.
  • 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 http://loaminoo.linkpc.net/1097093091099091/Journey-Untold-My-Mother-s-Struggle-with-Mental-Illnesses-Bipolar-paranoid-schizophrenia-or-other-forms-of-mental-illness-is-debilitating-for-everyone-including-the-families-left-to-try-to-cope-by-Yassin-Hall.pdf
    • http://loaminoo.linkpc.net/1097093091097097/Journey-Untold-by-Yassin-Hall.pdf
    • http://loaminoo.linkpc.net/9090093097098097/Mental-Fitness-Training-Improving-your-brain-s-mental-toughness-for-life-Mental-Fitness-mental-training-brain-power-self-improvement-mental-strength-Book-1-by-Stephen-Cabo.pdf
    • http://loaminoo.linkpc.net/3092091091090094/No-Way-Out-But-Through-One-Man-s-Journey-from-Mental-Illness-to-Clarity-and-Strength-of-Soul-by-Graham-Aitchison.pdf
    • http://loaminoo.linkpc.net/3098095096095094/Defying-Mental-Illness-by-Paul-Komarek.pdf
    • http://loaminoo.linkpc.net/4099094091094096/The-ABCs-of-Recovery-from-Mental-Illness-by-Carol-A-Kivler.pdf
    • http://loaminoo.linkpc.net/1090092099092094096/Surviving-Mental-Illness-Through-Humor-by-Jessica-Azar.pdf
    • http://loaminoo.linkpc.net/2090093095096099/The-Price-of-Silence-A-Mom-s-Perspective-on-Mental-Illness-by-Liza-Long.pdf
    • http://loaminoo.linkpc.net/6097094094090/Matters-to-a-Head-Cannabis-Mental-Illness-and-Recovery-by-Kate-K-.pdf
    • http://loaminoo.linkpc.net/3098095099095094/Resilience-Two-Sisters-and-a-Story-of-Mental-Illness-by-Jessie-Close.pdf
    • http://loaminoo.linkpc.net/1090094098090096/Women-s-Madness-Misogyny-Or-Mental-Illness-by-Jane-M-Ussher.pdf
    • http://loaminoo.linkpc.net/3096096096095094/Culture-and-Mental-Illness-A-Client-Centered-Approach-by-Richard-J-Castillo.pdf
    • http://loaminoo.linkpc.net/3098095098094094/I-am-Not-Sick-I-Don-t-Need-Help-How-to-Help-Someone-With-Mental-Illness-Accept-Treatment-by-Xavier-Francisco-Amador.pdf
    • http://loaminoo.linkpc.net/2093097099096093/Out-Came-the-Sun-Overcoming-the-Legacy-of-Mental-Illness-Addiction-and-Suicide-in-My-Family-by-Mariel-Hemingway.pdf
    • http://loaminoo.linkpc.net/8092094094095095/My-Nerves-Are-Bad-Puerto-Rican-Women-Managing-Mental-Illness-and-HIV-Risk-by-Sana-Loue.pdf
    • http://loaminoo.linkpc.net/2092093096096094/Helping-Someone-with-Mental-Illness-A-Compassionate-Guide-for-Family-Friends-and-Caregivers-by-Rosalynn-Carter.pdf
    • http://loaminoo.linkpc.net/2093097096092097/Great-and-Desperate-Cures-The-Rise-and-Decline-of-Psychosurgery-and-Other-Radical-Treatments-for-Mental-Illness-by-Elliot-S-Valenstein.pdf
    • http://loaminoo.linkpc.net/3093096098097094/Surviving-PTSD-amp-moral-injury-How-an-Afghanistan-veteran-breaks-the-silence-on-mental-illness-by-Erik-Krikke.pdf
    • http://loaminoo.linkpc.net/7092098099098095/Interaction-of-Media-Cognition-and-Learning-An-Exploration-of-How-Symbolic-Forms-Cultivate-Mental-Skills-and-Affect-Knowledge-Acquisition-by-Gavriel-Salomon.pdf
    • http://loaminoo.linkpc.net/2093095094093090/A-Mother-s-Nightmare-A-Heartrending-Journey-into-Near-Fatal-Childhood-Illness-by-Cathy-Crimmins.pdf
    • http://loaminoo.linkpc.net/4099094091094096/

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